I need help answering this!!

What do u think caused the size of the roman empire to change

How did the discovery of gold impact american indian territory in the 1870s? a. war broke out among american indian groups when warring chiefs signed new treaties with the government. b. war broke out when white settlers pressured the government to take the land from american indians. c. war broke out when white settlers pressured the government to let american indians keep their land. d. war broke out when white settlers tried to buy land from warring american indian groups.

What was the approximate population of the ottoman empire when the mughal empire in india was founded in 1520? 11 million 15 million 30 million 35 million