At least two methods that empires used to gain, consolidate, and maintain their power?

For an empire to grow, one state has to take control of other states or groups of people. ... The Maurya Empire in India used a combination of political sabotage, religious conversion, and military conquest to expand its rule.

a) hostility to or prejudice against jews.

b) the holocaust, also referred to as the shoah, was a genocide during world war ii in which nazi germany, aided by its collaborators, systematically murdered approximately 6 million european jews             , around two-thirds of the jewish population of europe, between 1941 and 1945.