In latin american history, the pre-columbian era refers to the time a. before the arrival of european explorers and colonists b. of increased immigration to the new world c. also known as the era of independence d. after the fall of the aztec empire

A. Before the advent of European explorers and colonists

Explanation:

Christopher Columbus who lead the expedition that led to the European discovery of the New World in 1492.In America, there were three Pre-columbian cultures predominated and they were the Mayas, the Incas, and the Aztecs.Earlier agriculture was the main occupation of the pre-Hispanic civilization, the cultivation, and the main food was corn.All pre-Hispanic civilizations Regarding their religious ideology, there was the presence of various gods commonly cruel who demanded human sacrifices.

The scientist can conclude that there is a decrease in the natural resources due to human activities. because of innovation and modernization of the environment, then there goes pollution and other bad effects that destroys the natural resources.

Respiratory and cardiovascular diseaseor maybe your looking for the say 2.6 people die from