Question

what were the two important reason for emergence of new kingdoms in seventh century​

Answer 1

Answer:

By the 7th century, there were big landlords or warrior chiefs in different regions of the subcontinent.

Existing kings often acknowledged them as their samantas or subordinates.

They were expected to bring gifts for their kings or overlords and provide them with military support.

Answer 2

Although much less abundant than nitrogen and oxygen in Earth's atmosphere, carbon dioxide is an important constituent of our planet's air. A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms. Carbon dioxide is an important greenhouse gas that helps to trap heat in our atmosphere.