What process has the historian followed when testing the accuracy of the source against other facts and outside data?

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.

north atlantic treaty organization.

6ix9ine ft. lil baby tic toc.

it's lit.

not really sure i needed the points. sorry