Question

What action did President Polk take that resulted in the war between the United States and Mexico?
He ordered troops to invade Mexico and capture Vera Cruz and Mexico City.
He refused to return Mexican land that had been turned over by Santa Anna.
He tricked General Santa Anna into bringing troops across the U.S. border.
He sent General Zachary Taylor to claim an area of disputed land for the United States.

Answer 1

I am pretty sure that the action which President Polk took that resulted in the war between the United States and Mexico is He sent General Zachary Taylor to claim an area of disputed land for the United States. Actually, this is the major step which led to the war between the United States and Mexico. 
Do hope you still need the answer because this one is really helpful!

Answer 2

Answer:

D.  He sent General Zachary Taylor to claim an area of disputed land of the United States.

Explanation:

I just took the test!