The answer is B, skilled workers
I believe only the last is correct, the reasoning being as follows: Option 1 should have switched consequences, Option 2, The American Revolution began in 1763, and Option 3, quite obvious.
They were forced to move B.
The Answer is A because the only time the U.S went to war with Russia was the cold war. well I wouldn't call it a war it's like a conflict but no fighting just agrueing and unagreement.