Question

what contribution did the soldiers at valley forge make to the american revolution?
o they wrote letters that convinced the french to ally with the americans.
o they successfully spied on british troops.
o they won an important christmas eve surprise attack against the british.
o they were the main force that defeated the british.

Explanation:

The soldiers at Valley Forge trained and became a more disciplined and effective fighting - force. Their perseverance and growth were crucial in eventually defeating the British in the American Revolution. The other options are incorrect as the French alliance was due to other factors, there's no major record of Valley Forge soldiers spying on British troops, and the Christmas Eve surprise attack was the work of Washington's forces at Trenton, not directly related to Valley Forge soldiers' main contribution.

Answer:

They were the main force that defeated the British.