Persian and Greek conquests

In 530 BCE Cyrus the Great, King of the Persian Achaemenid Empire crossed the Hindu-Kush mountains to seek tribute from the tribes of Kamboja, Gandhara and the trans-India region (modern Afghanistan and Pakistan).^[69] By 520 BCE, during the reign of Darius I of Persia, much of the northwestern subcontinent (present-day eastern Afghanistan and Pakistan) came under the rule of the Persian Achaemenid Empire. The area remained under Persian control for two centuries.^[70] During this time India supplied mercenaries to the Persian army then fighting in Greece.^[69]

Under Persian rule the famous city of Takshashila became a centre where both Vedic and Iranian learning were mingled.^[71] The impact of Persian ideas was felt in many areas of Indian life. Persian coinage and rock inscriptions were adopted by India. However, Persian ascendency in northern India ended with Alexander the Great's conquest of Persia in 327 BCE.^[72]

By 326 BCE, Alexander the Great had conquered Asia Minor and the Achaemenid Empire and had reached the northwest frontiers of the Indian subcontinent. There he defeated King Porus in the Battle of the Hydaspes (near modern-day Jhelum, Pakistan) and conquered much of the Punjab.^[73] Alexander's march east put him in confrontation with the Nanda Empire of Magadha and the Gangaridai Empire of Bengal. His army, exhausted and frightened by the prospect of facing larger Indian armies at the Ganges River, mutinied at the Hyphasis (modern Beas River) and refused to march further East. Alexander, after the meeting with his officer, Coenus, and learning about the might of Nanda Empire, was convinced that it was better to return.

The Persian and Greek invasions had important repercussions on Indian civilisation. The political systems of the Persians were to influence future forms of governance on the subcontinent, including the administration of the Mauryan dynasty. In addition, the region of Gandhara, or present-day eastern Afghanistan and northwest Pakistan, became a melting pot of Indian, Persian, Central Asian, and Greek cultures and gave rise to a hybrid culture, Greco-Buddhism, which lasted until the 5th century CE and influenced the artistic development of Mahayana Buddhism.

Maurya Empire (322–185 BCE)

The Maurya Empire (322–185 BCE), ruled by the Mauryan dynasty, was a geographically extensive and powerful political and military empire in ancient India.It was the first empire to unify India into one state. The empire was established by Chandragupta Maurya in Magadha, which is now Bihar.^[74] The empire flourished under the reign of Ashoka the Great.^[75]

At its greatest extent, it stretched to the north to the natural boundaries of the Himalayas and to the east into what is now Assam. To the west, it reached beyond modern Pakistan, annexing Balochistan and much of what is now Afghanistan, including the modern Herat and Kandahar provinces. The empire was expanded into India's central and southern regions by the emperors Chandragupta and Bindusara, but it excluded extensive unexplored tribal and forested regions near Kalinga which were subsequently taken by Ashoka.^[76] the Maurya Empire is regarded largest empire ruled by any Indian Ruler.

Ashoka ruled the Maurya Empire for 37 years from 268 BCE until he died in 232 BCE.^[76] During that time, Ashoka pursued an active foreign policy aimed at setting up a unified state.^[77] However, Ashoka became involved in a war with the state of Kalinga which is located on the western shore of the Bay of Bengal.^[78] This war forced Ashoka to abandon his attempt at a foreign policy which would unify the Maurya Empire.^[77]

During the Mauryan Empire slavery developed rapidly and a significant amount of written records on slavery are found.^[79] The Mauryan Empire was based on a modern and efficient economy and society. However, the sale of merchandise was closely regulated by the government.^[80] Although there was no banking in the Mauryan society, usury was customary with loans made at the recognized interest rate of 15% per annum.

Ashoka's reign propagated Buddhism. In this regard Ashoka established many Buddhist monuments. Indeed, Ashoka put a strain on the economy and the government by his strong support of Buddhism. towards the end of his reign he "bled the state coffers white with his generous gifts to promote the promulgation of Buddha's teaching.^[77] As might be expected, this policy caused considerable opposition within the government. This opposition rallied around Sampadi, Ashoka's grandson and heir to the throne.^[81] Religious opposition to Ashoka also arose among the orthodox Brahmanists and the adherents of Jainism.^[82]

Chandragupta's minister Chanakya wrote the Arthashastra, one of the greatest treatises on economics, politics, foreign affairs, administration, military arts, war, and religion produced in Asia. Archaeologically, the period of Mauryan rule in South Asia falls into the era of Northern Black Polished Ware (NBPW). The Arthashastra and the Edicts of Ashoka are primary written records of the Mauryan times. The Lion Capital of Asoka at Sarnath, is the national emblem of India.

Asokha pillar is in Nepal.

Epic and Early Puranic Period - Early Classical Period & Golden Age (ca. 200 BCE–700 CE)

The time between 200 BCE and ca. 1100 CE is the "Classical Age" of India. It can be divided in various sub-periods, depending on the chosen periodisation. The Gupta Empire (4th-6th century) is regarded as the "Golden Age" of Hinduism, but a host of kingdoms ruled over India in these centuries.

The Satavahana dynasty, also known as the Andhras, ruled in southern and central India after around 230 BCE. Satakarni, the sixth ruler of the Satvahana dynasty, defeated the Sunga Empire of north India. Afterwards, Kharavela, the warrior king of Kalinga,^[83] ruled a vast empire and was responsible for the propagation of Jainism in the Indian subcontinent.^[83]

The Kharavelan Jain empire included a maritime empire with trading routes linking it to Sri Lanka, Burma, Thailand, Vietnam, Cambodia, Borneo, Bali, Sumatra, and Java. Colonists from Kalinga settled in Sri Lanka, Burma, as well as the Maldives and Maritime Southeast Asia. The Kuninda Kingdom was a small Himalayan state that survived from around the 2nd century BCE to the 3rd century CE.

The Kushanas migrated from Central Asia into northwestern India in the middle of the 1st century CE and founded an empire that stretched from Tajikistan to the middle Ganges. The Western Satraps (35-405 CE) were Saka rulers of the western and central part of India. They were the successors of the Indo-Scythians and contemporaries of the Kushans who ruled the northern part of the Indian subcontinent and the Satavahana (Andhra) who ruled in central and southern India.

Different dynasties such as the Pandyans, Cholas, Cheras, Kadambas, Western Gangas, Pallavas, and Chalukyas, dominated the southern part of the Indian peninsula at different periods of time. Several southern kingdoms formed overseas empires that stretched into Southeast Asia. The kingdoms warred with each other and the Deccan states for domination of the south. The Kalabras, a Buddhist dynasty, briefly interrupted the usual domination of the Cholas, Cheras, and Pandyas in the south.

Southern India

During this period the southern peninsular of India was at first ruled by the Satavahana dynasty and by the 3 Tamil kingdoms the Chola dynasty, Pandyan Dynasty and Chera dynasty. The Tamil Sangam literature flourished during this period. After the collapse of the Satavahana Dynasty in the 3rd century the Vakataka dynasty, the Pallava dynasty, the Western Ganga dynasty and the Kadamba dynasty emerged and dominated the major part of southern peninsular of India until the 6th century. In the 6th century the famous Chalukya dynasty was established and dominated the major part of southern India until the 8th century.

Sunga Empire

The Sunga Empire(Sanskrit: शुंग राजवंश) or Shunga Empire was an ancient Indian dynasty from Magadha that controlled vast areas of the Indian Subcontinent from around 187 to 78 BCE. The dynasty was established by Pusyamitra Sunga, after the fall of the Maurya Empire. Its capital was Pataliputra, but later emperors such as Bhagabhadra also held court at Besnagar, modern Vidisha in Eastern Malwa.^[84] Pushyamitra Sunga ruled for 36 years and was succeeded by his son Agnimitra. There were ten Sunga rulers. The empire is noted for its numerous wars with both foreign and indigenous powers. They fought battles with the Kalingas, Satavahanas, the Indo-Greeks, and possibly the Panchalas and Mathuras. Art, education, philosophy, and other forms of learning flowered during this period including small terracotta images, larger stone sculptures, and architectural monuments such as the Stupa at Bharhut, and the renowned Great Stupa at Sanchi. The Sunga rulers helped to establish the tradition of royal sponsorship of learning and art. The script used by the empire was a variant of Brahmi and was used to write the Sanskrit language. The Sunga Empire played an imperative role in patronizing Indian culture at a time when some of the most important developments in Hindu thought were taking place.

Northwestern hybrid cultures

The northwestern hybrid cultures of the subcontinent included the Indo-Greeks, the Indo-Scythians, the Indo-Parthians, and the Indo-Sassinids. The first of these, the Indo-Greek Kingdom, was founded when the Greco-Bactrian king Demetrius invaded the region in 180 BCE, extending his rule over various parts of present-day Afghanistan and Pakistan. Lasting for almost two centuries, the kingdom was ruled by a succession of more than 30 Greek kings, who were often in conflict with each other.

The Indo-Scythians were a branch of the Indo-European Sakas (Scythians) who migrated from southern Siberia, first into Bactria, subsequently into Sogdiana, Kashmir, Arachosia, and Gandhara, and finally into India. Their kingdom lasted from the middle of the 2nd century BCE to the 1st century BCE.

Yet another kingdom, the Indo-Parthians (also known as the Pahlavas), came to control most of present-day Afghanistan and northern Pakistan, after fighting many local rulers such as the Kushan ruler Kujula Kadphises, in the Gandhara region. The Sassanid empire of Persia, who was contemporaneous with the Gupta Empire, expanded into the region of present-day Balochistan in Pakistan, where the mingling of Indian culture and the culture of Iran gave birth to a hybrid culture under the Indo-Sassanids.

Satavahana Dynasty

The Śātavāhana Empire (Telugu: శాతవాహన సామ్రాజ్యము, Śātavāhana Sāmrājyaṁ ^?, Maharashtri: शालिवाहन, Śālivāhana^[85]) was a royal Indian dynasty based from Amaravati in Andhra Pradesh as well as Junnar (Pune) and Prathisthan (Paithan) in Maharashtra. The territory of the empire covered much of India from 230 BCE onward. Sātavāhanas started out as feudatories to the Mauryan dynasty, but declared independence with its decline. They are known for their patronage of Hinduism and Buddhism which resulted in Buddhist monuments from Ellora (a UNESCO World Heritage Site) to Amaravati. The Sātavāhanas were one of the first Indian states to issue coins struck with their rulers embossed. They formed a cultural bridge and played a vital role in trade as well as the transfer of ideas and culture to and from the Indo-Gangetic Plain to the southern tip of India. They had to compete with the Sunga Empire and then the Kanva dynasty of Magadha to establish their rule. Later, they played a crucial role to protect a huge part of India against foreign invaders like the Sakas, Yavanas and Pahlavas. In particular their struggles with the Western Kshatrapas went on for a long time. The great rulers of the Satavahana Dynasty Gautamiputra Satakarni and Sri Yajna Sātakarni were able to defeat the foreign invaders like the Western Kshatrapas and to stop their expansion. In the 3rd century CE the empire was split into smaller states.

Kushan Empire

The Kushan Empire expanded out of what is now Afghanistan into the northwest of the subcontinent under the leadership of their first emperor, Kujula Kadphises, about the middle of the 1st century CE. By the time of his grandson, Kanishka, (whose era is thought to have begun c. 127 CE), they had conquered most of northern India, at least as far as Saketa and Pataliputra, in the middle Ganges Valley, and probably as far as the Bay of Bengal.^[86]

They played an important role in the establishment of Buddhism in India and its spread to Central Asia and China. By the 3rd century, their empire in India was disintegrating; their last known great emperor being Vasudeva I (c. 190-225 CE).

Roman trade with India

Roman trade with India started around 1 CE, during the reign of Augustus and following his conquest of Egypt, which had been India's biggest trade partner in the West.

The trade started by Eudoxus of Cyzicus in 130 BCE kept increasing, and according to Strabo (II.5.12.^[87]), by the time of Augustus, up to 120 ships set sail every year from Myos Hormos on the Red Sea to India. So much gold was used for this trade, and apparently recycled by the Kushans for their own coinage, that Pliny the Elder (NH VI.101) complained about the drain of specie to India:

"India, China and the Arabian peninsula take one hundred million sesterces from our empire per annum at a conservative estimate: that is what our luxuries and women cost us. For what percentage of these imports is intended for sacrifices to the gods or the spirits of the dead?"

—Pliny, Historia Naturae 12.41.84.^[88]

The maritime (but not the overland) trade routes, harbours, and trade items are described in detail in the 1st century CE Periplus of the Erythraean Sea.

Gupta rule - Golden Age

Classical India refers to the period when much of the Indian subcontinent was reunited under the