30. which statement describes an accomplishment of byzantine emperor justinian?

a. he moved the imperial capital from rome to byzantium.

b. he introduced a uniform code of law that unite the empire.

c. he reunited the eastern and western halves of the roman empire.

d. he founded the eastern orthodox church and served as its first patriarch.

How did european exploration and expansion cause the african slave trade to expand? a. european explorers discovered the slave trade and expanded it across the indian ocean into south asia. b. arab armies captured european explorers and forced them into slavery. c. european traders shipped enslaved africans to work on plantations in european colonies in the americas. d.european explorers captured african people and forced them to work on their ships.