One way that Singapore's leaders avoid social upheaval is:

a countries leader should be motivated by the common good of the country.

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.

yes.

explanation:

because it let the japanese know who had the upper hand in the war.

agriculture revolution