Under what circumstances might a President declare martial law? (The Court, in 1946 (the year may be important!), found unconstitutional President Roosevelt's declaration of martial law in the Hawaii Territory following the attack on Pearl Harbor.)

The president can convene when there is a special session. and it can be ended when no one can't agree

Explanation:

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b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.