Can you please write me a aceit on how life was like politically, socially, and economically for black people in the north during jim crow era ( Can you please provide context and time period )

Examine this list of events that took place in china during the 20th century. which event or events could possibly have been a cause of the great leap forward? a. i only b. i, iii, and iv c. i and iii d. iii and iv