Where is Harlem

Harlem is a neighbourhood where there is a multicultural population. It is mainly due to the Great Migration also called the Black Migration that started in the 1900s. It was the movement of 6 million African Americans out of the rural Southern United States to the urban Northeast, Midwest and West  It was caused by the poor economic conditions and the racial segregation and discrimination in the Southern states where black people were discriminated by the Jim Crow Laws.