How were the wars in nineteenth-century Europe similar to and different from the Civil War in the United States?

A civil war, also known as an intrastate war in polemology, is a war between organized groups within the same state or country. ... A civil war is a high-intensity conflict, often involving regular armed forces, that is sustained, organized and large-scale.

Explanation:

they united the colonies in their fight against the british.

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.