What is federalism? Federalism explains the duty of every citizen to obey all the laws passed by its government.
Federalism is the relationship between the federal and state governments.
Federalism describes the ability of a citizen to sue for protection under the law.
Federalism is the power possessed by the US Congress to make laws that apply to all citizens.

Federalism is the relationship between the federal and state governments.

Explanation:

for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.