The u. s. constitution provides for all of the following branches of government except for:
military
judicial
legislative
executive

the church governed the society after the empire fell.   constantine took charge of rome and ended the confusion which had over religion and made christianity as the only religion and that started ruling the roman empire. he also divided the empire into two and fortified the eastern part.   he ruled the eastern part.

collect the tariff by force if necessary

use the military to enforce a federal law

b and c