The Battle of Bunker Hill in 1775 helped to answer O whether the Americans would win the war.
who the American leader was.
how the Americans would fight against the British.
O how the Americans would get supplies for the war.

explanation:

there are two statements that are incorrect.

1. the marshall plan was a lend lease program. it was an economic plan that europe redevelop itself after wwii.

2. einstein didn't really do anything to further the allied cause in building the bomb. he merely sent a letter to fdr telling him (in 1939) that if the united states entered the war, perhaps it would be wise to build the bomb before germany did. i would say this answer is incorrect, but when america entered the war 2 years later, fdr thought it might be a good idea to take einstein's advice.

the 4th choice is definitely so wrong that is likely the single answer of this question

answer; i do believe that the (14th)fourteenth amendment is the correct answer

answer; /// i believe that they became successful farmers; ///////////////

probably that america is racist