European colonies are experiencing issues with declining populations one of the main causes of this declines is

Low birth rates

Explanation:

The cause of European countries having population decline can be attributed to LOW BIRTH RATES. This is evident in the fact that the recent statistical survey has shown that the total fertility rates in the majority of European countries are 1.55 per woman.

However, the ideal birth rate according to the United Nations Population Division for an optimum population should be at least 2.1 per woman.

Hence, in this case, the correct answer is "LOW BIRTH RATES."

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.

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.