The answer is September 17 , 1787.
It was the fact that world super powers at the time (U.S) and (U.S.S.R) where building up an armory of nukes but they both knew if they where to use these weapons it would utterly destroy the world.
Here's a memory aid: (U.S): hey Russia lets not kill each other with nukes in this war lets just keep it "COOL" and spy on each other instead
I would choose non-polluting energy source and useful in remote areas - that is if there are plants and industries that are away from the general population.
Answer:
They had allies who helped them by providing aid in the form of supplies, weapons, military leaders, and soldiers. These allies played a major role in helping the colonists to gain their independence. Who helped the Americans in the revolution? A number of European countries assisted the American colonists.
Explanation:
By the time the British surrendered at Yorktown, Virginia, in 1781, the Americans had basically won their independence. Fighting would finally come to a formal end in 1783. ... The British military was the best in the world. It had conquered much of the world and prevailed in war after war over the past century.
