In which two ways were the mauryan and gupta dynasties similar? both dynasties promoted the principles of buddhism. both dynasties witnessed significant scientific discoveries. both dynasties played an important role in politically uniting india. both dynasties revived the trade system along the silk road. both dynasties maintained a standing army.

The answers to your question is,

Both dynasties witnessed significant scientific discoveries and

Both dynasties played an important role in politically uniting India.

-Mabel <3

Option:  Both dynasties played an important role in politically uniting India.

             Both dynasties maintained a standing army.

Explanation:

Chandragupta under Mauryan Dynasty successfully united the Indian subcontinent when he got control of northwestern India and Bactriana (Afghanistan). The Mauryan Army considered to be the strongest and largest standing army which consists according to historians with 600,000 infantry, 9,000 war elephants, and 30,000 cavalries, supported the expansion and defence of the empire.

Samudragupta under Gupta dynasty brought together over 20 kingdoms into his empire and spread the Gupta Empire from Northern to Central India. Gupta Empire from 320 to 600 CE expanded through political alliances and conquest.

the name of the theory is landmass theory.

imma have to go   the third option

sorry if i am wrong hope this

if i am right plz give me brainliest