The great northern migration of african americans occurred in the:

a. 1850s
b. 1870s
c. 1920s
d. 1930s

ANSWER:

Great Northern Migration of African Americans occurred in 1920s.

EXPLANATION:

The movement consisted of African American which were in 6 million. The migration took place from rural "Southern United States" to the urban Northwest, Midwest and west. It is believed that The Great Northern Migration of "African Americans" took place from "1916 to 1970".This movement was recognized as the huge and most rapid movement of mass.  In every U.S. Census before  1910, more than "90%" of the "African-American population" lived in the American South.

Nigeria and south africa

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].