Who had the most power in the Islamic world, the sultan of the Abbasid caliph?

The united states government was in debt from its beginning. how did the u. s. get into debt, and whom did it owe money?

Iwill be giving 15 points to whoever answers the concept of checks and balances means that each branch of governmenta. has its own powers and responsibilitiesb. is clearly described in articles of the constitutionc. has the ability to correct the other branches in case of an errord. is set up so that in case of constitutional crisis, the governement will continue to operate

What city of ancient russia was heavily influenced by the byzantine merchants?