Which common language unify the islamic empire both politically and economically

Arabic

Explanation:

Arabic is the common language that helped unify the Islamic Empire both politically and economically. Although Arabic originated between the 1st and 4th century CE, it was standardized around the 8th century. By this time, Classical Arabic was an essential prerequisite for rising into the higher classes throughout the Islamic world. This led to most educated people learning Arabic and using it as an official language across the Islamic world, helping unify these diverse territories.

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.

answer; taking up arms to defend the nation;