The strength and wealth of the ottoman empire by the fifteenth century was in ?

why cant anybody every add the D**N ANSWERS when they ask a d**n question. no you're not right and its not your fault cause somebody didnt have enough common sense to add the actual answers to his question. as if he didnt care if he even got the right answer or not!!!. now the answers to this question are

1 its location as the center of international land trade

2 technological advancements

3 changing its name from Constantinople to Istanbul

4 revolts that shook the surrounding empires

wheres the studying charts

explanation:

it granted civil rights to african americans.