India is home to one of the richest and the most ancient civilizations in the world, which existed over 5,000 years ago. This civilization originated in the Indus River Valley, hence the name given to it was Indus Valley civilization. It is the origin of many of the ideas, philosophies and movements which have shaped the destiny of mankind. The civilization with its main cities Mohenjadaro and Harappa flourished for over eight centuries. Its people thought to be Dravidians, whose descendants still inhabit the far south of India.

Aryan and Greek Invasions

The country was influenced by many invasions, the Arya or Aryans (1500BC) as they are known today, are the first invaders. Aryans were a group of nomadic tribes who had originally inhabited the steppes of Central Asia, in particular the region between the Caspian Sea and the Black Sea. Tall, fair haired, with clear cut features, they spoke a group of languages which have become known as Indo-European. They settled in the region to the north west of India, known as the Punjab. They brought with them new ideas, new technology and new gods, this is one of the most important epochs in Indian history. With time, the Aryans were engaged in struggle with the dark skinned people or Dasyus. The Dasyus were the Dravidians. The superiority of the Aryans resulted in the Dravidian submission.

The second great invasion into India occurred around 500 BC, when the Persian kings Cyrus and Darius, pushing their empire eastward, conquered the prized Indus Valley. After centuries of obscurity, doubt and conjecture, India came into the full light of recorded history with the invasion of Alexander the Great of Macedonia in 327 BC. Although Alexander crossed the Indus and defeated an Indian king, he turned back without extending his power into India.

Maurya and Gupta Periods

The receding tide of Greek power led to a period of confusion and uncertainty in northern India as various rulers tried to make capital of the vacuum that Alexander had left behind. These circumstances saw the rise of Mauryas,  India's first imperial dynasty, founded by Chandragupta Maurya. Maurya dynasty reached its peak around 260 BC under the Emperor Ashoka, the most famous figures in Indian History. He left a series of inscriptions on pillars and rocks across the sub-continent. But after his death, the Mauryan empire gradually fell apart because his descendants were not as strong rulers as he was. 

At the beginning of the fourth century AD, India was fragmented into a lot of small kingdoms. They were often invaded by stronger neighbors like Greeks. They conquered Indus Valley again but they didn't stay for long. Out of this seeming Chaos, King Chandragupta II united all of northern India into a great empire again. 

 The Gupta period has been described as the golden age of Indian history and under their rule of northern India, arts, including poetry and literature, flourished. The exquisite Ajanta and Ellora caves were excavated in this period. Gupta period extended from 320AD to 480AD. But in 455 AD the Huns invaded India from the north and destroyed the Guptan Empire. Again India was split into small kingdoms until the Muslim invasions around 1000 AD. 

In South India, great empires rose, entirely independently from those of the north. These included the Kalachuris,  Chalukyas, Rashtrakutas, Yadhavas, Hoysalas, Pallavas, Cholas, Pandyas, Cheras and the Vijayanagar kingdom.