Which of the following is true about serfs?
a. serfs were allowed to marry without the lord's permission.
b. serfs were allowed to leave the manor when they chose to do so
c. serfs were bound to the land and considered slaves.
d. serfs that worked the fief were transferred with the land to a new owner

I know for sure C. is true. I’m not certain about D.

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.