Answer:
Unrestricted submarine warfare by Germany
Explanation:
Did you know that Germany sunk the ship with passengers called "The Lusitania"? Germans thought it might have been a allied ship carrying ammunition, and weapons. A total of 1,195 people we killed. Including 128 Americans.
Answer:
It led thinkers to seek out explanations instead of accepting common knowledge.
Explanation:
With the melting Ice caps the Ocean around us is rising. Making the land around the U.S. shrink. Now if we are talking in the past the land became larger around the iceage because of the freezing water.