Answer:
A.
Explanation:
All of those events cause pollution.
Historians work to methodically dissect the past to help us understand the present and avoid making similar mistakes in the future.
The base job of a Historian is to break down a historical events into parts to understand how the historical event or historical arc could have occurred as it did. This could range from "Why did the Japanese bomb Pearl Harbor" to "Why did the Union win the Civil War"
Each question has answers that can help future generations understand the implications of their actions.
Pearl Harbor, Pearl Harbor and Pearl Harbor.
Answer:The American system was a national economic plan put forth by Senator Henry Clay of Kentucky and the Whig party throughout the first half of the 19thcentury. The plan consisted of three major components: Pass high tariffs (taxes) on imports to protect American businesses and to increase revenues