How were the trade unions significant to the working class

Trade unions were significant to the working class because they helped hold businesses accountable, by giving those workers a voice in the workplace, they can expose and call out bad business practices, such as low pay or no healthcare coverage. They strengthen their position in dealing with employers and with governments.

Explanation:

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.

i beleive that d is the right answer