Nicolaus Copernicus
In the 16th century, Nicolaus Copernicus began devising his version of the heliocentric model. Like others before him, Copernicus built on the work of Greek astronomer Atistarchus, as well as paying homage to the Maragha school and several notable philosophers from the Islamic world
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Explanation:
Federalism is a system of government in which the same territory is controlled by two levels of government. Generally, an overarching national government is responsible for broader governance of larger territorial areas, while the smaller subdivisions, states, and cities govern the issues of local concern
Answer:
What change made Byzantium more powerful? Defensive walls were built around the city. The region began to recover from civil wars. The emperor seized more power from the military.
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