Typically, southern colonial plantation owners
a. agreed with the quakers’ views on slavery.
b. hired indentured servants to take the place of enslaved persons.
c. feared revolts as the number of enslaved persons grew. often taught enslaved persons to read and write.

Typically, southern colonial plantation owners feared revolts as the number of enslaved persons grew. Option C is correct.

Slave rebellions entailed a continuous source of fear in the American South, especially due to the fact that black slaves accounted for more than one-third of the region’s population in the 18th century.  Laws dictating when, where and how slaves could congregate were enacted in order to prevent insurrection and quell white paranoia.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )