Answer:
The Zimmerman note and unrestricted submarine warfare by Germany
Explanation:
The Zimmermann Telegram was a note from German official to offer military alliance between Mexico and Germany. President Wilson understood the diplomatic relation and broke off the relation and decided to enter the WWI.
Germany was repeatedly attacking U.S. by submarine warfare in the Atlantic that killed ore than 120 U.S. citizens on May 7, 1915 that provoked outrage in the U.S. to participate in WWI.
Hence, the two reason are The Zimmerman note and unrestricted submarine warfare by Germany.
The Christians won the first crusade and the Muslims won the other three.
This is the definition of the word obligation.
Factors that allowed European nations to dominate Africa and Asia included the ability to travel quickly across the ocean and the ability to carry and ship food and weapons. The shipping lanes helped the Europeans to take over almost every area they visited.
