According to the article what is one reason why the u. s did not enter world war 1 until 1917?

the u.s did join ww1

Explanation:

The sinking of Lusitania is one of the many reasons that eventually led to the US joining this war. The attack on Lusitania took place in 1915, but the US declared war on Germany only in 1917. In between these two events, much of the water had gone under the bridge.

answer; i believe the correct answer is (the willamete valley);

the answer is true. i hope this .