The two reasons:
- Britain intercepted the Zimmerman Telegram
- Germany resumed unrestricted submarine warfare
Context/detail:
Public outrage in the US against the Germans swept the nation following the sinking of the British ocean liner, <em>Lusitania</em> -- but that happened before 1917. When a German U-boat (submarine) sank the Lusitania in May, 1915, over 1,000 persons were killed, including more than 100 Americans. The passenger liner was targeted by the Germans because they suspected weapons were being shipped to Britain in the cargo hold of the ship.
Germany managed to stave off American entry into the war at the time by pledging to stop submarine attacks. But a couple years later they resumed such attacks, and there was also an intercepted telegram (the "Zimmerman Telegram") that showed Germany was trying to secure Mexico as an ally against the United States.
In 1917, the US declared war on Germany in response.
He was so popular because he led the US through the Great Depression and World War II
Answer:
Kept foreigners from interfering.
Explanation:
The Tokugawa shogunate held Japan isolated because they did not want the western influence in their society. The involvement of the British in the Opium War warned Japan to strengthen its borders and political power. The Tokugawa regime focused on political, social and economic affairs.
Isolationism is the term used to describe the foreign policies of Japan during the 17th century from threatening their values and culture.