1. group
2. period
3. noble gases
<u>B. Jim Crow laws</u>
<u>Jim Crow laws </u>were a series of restrictions on black civil rights that enforced racial segregation in the United States. They were enacted especially in the Southern States of America through almost a century, from 1877 to the beginning of the Civil Right Movement in the 1950s,
The statutes prohibited African American to attend and be in certain places where White people were, such as neighborhoods, restrooms, building entrances, elevators, cemeteries, amusement-park, cashier windows, churches, hospitals, jails, universities, etc.
Answer: 50%
The Black Death, caused by the bacterium Yersinia pestis, wiped out 30 to 50 percent of Europe's population between 1347 and 1351.
