Respuesta :



George Washington's Continental Army was losing the American Revolutionary War. ... Franklin's popularity, persuasive powers, and a key American battlefield victory were crucial factors that led France to join the war in 1778.

Answer:

Because France was Allies with America.

Explanation:

At the start of the war, France gave supplies (like gunpowder, clothing shoes etc) to the Continental Army. In 1778, France officially became allies (friends) with the US through the Treaty of Alliance. This made France become involved in the war.