Why was February selected as Black History month?

February was picked as Black History Month when Carter Woodson created Black History Week in 1926 near the birthdays of Abraham Lincoln, Booker T. Washington, and Frederick Douglass. (February)

Black History Month was made to remember the achievements of black people in America. This was made specially, because black people endured slavery in the early days of the republic, and contributed to various fields even before they were emancipated.