Which of the following most directly led to the decline of the Byzantine Empire in the thirteenth century? * A. The expansion of the Umayyad and Abbasid caliphates
B. The expansion of the Mongol Empire
C. The collapse of trans-Saharan trade routes in Nothern and Western Africa.
D. The expansion of Crusading activities in the Mediterranean region

What groups did the nazis single out for extermination ?

What were some effects in world war 1 in europe ? ( and only in europe)

Hich answer supports the statement, "the state constitution is more detailed than the u.s. constitution"? a) the u.s. constitution was created after state constitutions had been established. b) the u.s. constitution only exists because the state constitutions allowed it to be created. c) the articles in the state constitution do not deal with amendments like the u.s. constitution does. d) the articles in the state constitution deal with more specific issues than does the u.s. constitution.