How did the byzantine empire expand and contract over time

Byzantine Empire came into existence after Roman emperor Constantine I decided to build a new capital name Constantinople in the ancient Greek colony of Byzantium. The Byzantine Empire flourished with strong administration, political stability, and by wealth, it possessed. The empire declined in the reign of Emperor Constantine XI, who died in a battle. With the fall of the Byzantine Empire, ushered the reign of the Ottoman Empire.    

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.

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.