When did the US constitution become the official law of the land

March 4, 1789

Explanation:

when the first session of Congress began according to the standard legal account, the Constitution became efficative as law.

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."

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