One significant impact of the Boston Massacre was a, the establishment of a colony at Jamestown, Virginia
b. a clear understanding of King George's tariffs
c. the loss of George Washington as President
d a deeper divide between colonists loyal to Britain and those who were not

I'm pretty sure its D

Explanation:

I think all the other awnsers happen at different points in time.

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).