Which of these events happened when the United States dropped the first atomic bomb?

hhghkkggcvbkkjvhkiuvvb

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893

during the hitler era and it caused them to declare war on germany

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget