Answer: The United States is a federal republic in which the president, Congress and federal courts share powers reserved to the national government, according to its Constitution. The federal government shares sovereignty with the state governments.
Explanation:
i hope this helps :D
I’m not exactly sure what you are talking about. Maybe Emperor Constantine from the Byzantine empire? He built the Hagia Sophia
Realised that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table.
The correct answer is the first one. The ottoman empire did conquer parts of northern africa