Which president decided to use the atomic bomb in the summer of 1945?

President Harry Truman

Explanation:

President Harry Truman said the US used the bombs "against those who attacked us without warning at Pearl Harbor."

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.