In the classic sense, American imperialism is a myth. The US never had a policy either stated or understood of importing cheap raw material and requiring vassal states or colonies to accept expensive manufactured goods, as did for England. The dominance of American culture and products in the mid 20th century was mostly the result of people in other nation craving the standard of living enjoyed in the world's largest democracy.
Answer:
Most strikes are undertaken by labor unions during collective bargaining. The object of collective bargaining is to obtain a contract (an agreement between the union and the company) which may include a no-strike clause or penalizes the union and/or the workers if they walk out while the contract is in force.
Lewis and Clark expedition
Isolationist because they had no intentions on joining the war before pearl harbor