Apakah kaedah yang digunakan oleh sejarawan semasa melakukan penyelidikan​

Dr.cooper just started an experiment he wil collect data for 8 days how many hours is this

Who was the leader of the black nationalists in the 1920s?

Which statement about the draft during the vietnam war is true a. many young men were drafted b. only college students were drafted c. both men and women were drafted d. the military was made up entirely of volunteers