The 6th century BC saw rise of many kingdoms in the north. Some were republican where decisions were made in a public assembly by majority vote. The others were monarchies where the decisions were made by the king assisted by the advisors.

The republics were scattered in Himalayas or northwest. The monarchies were concentrated in the Gangetic plains.

The Buddhist literature talks about 16 Mahajanapadas.

The smaller of these submitted to the larger and in the end there were only four – Magadha, Avanti, Kosala and Vatsa.


Mahajanpadas of india      

                                                                Fig 1: Mahajanpadas

Rise of Magadha

Magadha was the most powerful amongst them. There were some geographic and strategic factors too that enhanced this advantage of Magadha like

1.      Her location between the upper and lower part of the Gangetic valley

2.      Fertile soil. Iron from Rajgir and copper from Gaya too added to her advantage.

3.   Her location at the centre of the trade highways added to her advantage and increased her wealth.

4.      First to use elephants in warfare.

Bimbisara was the first important king of Magadha. He was the contemporary of Vardhaman Mahavir and Gautama Buddha.

Ajatashatru imprisoned his father and ascended the throne. His rule was strengthened by many military conquests. Initially he was a supporter of Jainism and later became a supporter of Buddhism.

Later the Aryankas and Saisunaga followed by Nandas ruled Magadha. The last Nanda ruler was Dhana Nanda who was resented by the people.

Taking advantage of this Chanakya and his disciple Chandragupta launched a popular movement and dislodged him. This was the time when Alexander invaded India. 

Persian invasions and their impact on India:

Persian invasions started from 550 BC to 450 BC and were restricted to the Northwest Provinces and Punjab.

The kings Cyrus, Darius and Xerxes led these invasions.

1.      The Persian impacted trade between India and Iran.

2.      Kharoshti script a form of Iranian writing [left to right] became famous and Asoka edicts were written in Kharoshti script.

3.      Persian art had an impact on Mauryan art especially on Ashok's pillars and the sculptors found on them.

4.      Idea of issuing edicts and wordings on these bore Iranian influence.

5.      Pillars of Mauryan were lustrous and polished like Persian. They had bell shaped capitals like the victory pillars of Achaemenid emperors.

6.      Ceremonial head bath on birthday was of Persian influence.

7.      King consulted ascetic or physician who sat in a room of fire. This came from Zoroastrians the

religion of Persia.


Persian invasions into India

                                                           Fig 2: Persian invasions

Alexander’s invasion:

The political conditions in the North West India and Punjab allowed the invasion of Alexander. The small kingdoms present in those areas were disunited and couldn’t unite in face of a common enemy. However this doesn’t mean that Alexander's invasion was easy.

 Causes of the invasion:

1.   He was attracted by the fabulous Indian wealth; he also wanted to conquer the entire Persian satrapy of India after defeating the Persians.

2.    He was interested in geographical inquiry and natural history. He believed that on the eastern side of India there was a continuous sea so he had the desire of conquering eastern border of the world.

The battle of Alexander and the tribes of Indus resulted in victory for him. But his real test was against Porus. In spite of having a strong army Porus was defeated.

But Alexander treated him with respect and reinstated him. Alexander wanted to move further east but his soldiers were tired of prolonged hardship and wanted to return home. He relented but his return journey too was difficult.

He was attacked by republican tribes. He fell ill and died on way home.


1.      Immediate unification of North West frontier under Mauryans was seen.

2.      The small independent kingdoms came to an end.

3.      It also started direct contact between India and Greece. Naval expeditions increased and additional trade routes came into existence.


Influence on architecture:


  1. Art of well shaped, beautiful silver and gold coins came from Greeks.
  2. Influence on Indian astrology.
  3. Ashok’s edicts were in Greek and inscribed on stone pillars made of single column. 

The effect of Persians was higher than the Greeks.