What was the major difference between the ancient Roman Republic and a Monarchy?

The main difference between Republic and Monarchy is that the Republic is a form of government where head of state is elected and Monarchy is a system of government where the head of state position is inherited within family

unlike monarchies elsewhere, the wrong Crown was not passed down within a family and said when I roam King died the Senate a group of wealthy landowners shows their next king they could even choose someone from outside of Rome

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.

macon. i believe thats the answer

sorry if im wrong.