Opportunity cost refers to what you have to give up to buy what you want in terms of other goods or services. When economists use the word “cost,” we usually mean opportunity cost.
A long time ago like big reptiles
January 1, 1863 – March 31, 1877
The Executive Order 9066 was enacted because many Americans, after hearing of the December 7th attack, came to distrust the Japanese Americans, and thought of them as spies, secretly sending information to mainland Japan in exchange for money, etc. The Government used Executive 9066 to "protect" the Japanese, however, the Japanese received poor housing and had the bare necessities. Later on in the war, conditions improved.
If you want a account, read "thin wood walls"