Explanation:

• The basic unit of political organization under Vedic period was kula or family.
• Several families joined together on the basis of their kinship to form a village or grama.
• The leader of grama was known as gramani.
• A group of villages constituted a larger unit called visu.
• It was headed by vishayapati.
• The highest political unit was called jana or tribe.
• There were several tribal kingdoms during the Rig Vedic period such as Bharatas, Matsyas, Yadus and Purus.
• The head of the kingdom was called as rajan or king.
• The Rig Vedic polity was normally monarchical and the succession was hereditary.
• The king was assisted by purohita or priest and senani or commander of the army in his administration.
• There were two popular bodies called the Sabha and Samiti.
• The former seems to have been a council of elders and the latter, a general assembly of the entire people.
• Temple construction as an activity began during Post Mauryan Period.