Which of these was a factor in the united states entrance in the world war 1?

The invasion of neutral Belgium and stories of German atrocities in the country which shocked and outraged the Americans. There is also another reason,German U-boat sunk the British passenger ship Lusitania off the coast of Ireland. Over 1,000 passengers were killed, including 128 Americans. I hope this helps! 

D.were critical of the past.

Explanation:

Eleanor Roosevelt, as the wife of President Roosevet was invited to give a speech on FDR in 1946 and she used the opportunity to talk to the women present. She spoke extensively about the hose his husband was born in and which was willed to the government of United States of America.

Her speech suggest that most women were critical of the past.