Which factors most contributed to the united states' decision to enter world war 1

In case, there is another answer of this question: Germany's secret request that Mexico join the war against the US Apex

One of the factors that prompted the United States to enter world war 1 was.

The growing political tensions between the United States and Germany, This resulted in Germany starting to take drastic measures and one of them was that a German submarines attacked merchant ships that had civiles aboard.

For this reason United States declares the war against Germany