Answer: They supplied Great Britain with money and weapons.
Explanation:
Britain, led by Winston Churchill, was the first to point out the danger that came from Germany before the war began. And if Britain appeared to be the lone President Roosevelt, he provided considerable help to the British.
First and foremost, this assistance consisted of financial support. Also, the US government has assisted the British with significant amounts of weapons, ammunition and aircraft.
He gave the Emancipation Proclamation after the Battle of Antietam.
