Which of the following was the greatest short-term effect of Spanish colonization on American Indians?

A. It sharply decreases their population.
B. It opened them to European ideas
C. It gave them new crops to grow.
D. It led to their disappearance from the Americas.

A. It sharply decreases their population.

The correct answer is A. It sharply decreases their population.

To determine the greatest short-term effect of Spanish colonization on American Indians, let's analyze each option and evaluate which one had the most significant impact.

A. It sharply decreases their population: To confirm if the sharp decrease in population was a significant short-term effect of Spanish colonization, you can refer to historical records such as census data or reports from that time period. Scholars and historians who have studied this topic extensively may provide additional insights.

B. It opened them to European ideas: To assess the impact of Spanish colonization on exposing American Indians to European ideas, you can examine historical accounts, primary sources, or academic articles that discuss the cultural exchange and assimilation between the indigenous population and the Spanish colonizers.

C. It gave them new crops to grow: To determine if the introduction of new crops to grow was a notable short-term effect of Spanish colonization, you could investigate historical records, agricultural surveys, or scholarly studies that focus on the agricultural practices of American Indians after the arrival of the Spanish.

D. It led to their disappearance from the Americas: To understand if the disappearance of American Indians from the Americas was a significant short-term effect of Spanish colonization, you can consult historical sources, demographic data, or studies examining the impact of colonization on indigenous populations.

By conducting research based on historical evidence and scholarly analysis, you will be able to determine which option had the greatest short-term effect.