Most slaves lived on plantations, but the plantations were not very big: they rarely had more than 100 slaves. The best answer is then A. lived on plantations with 20 or more slaves.
B. Congress and state legislatures
Constitutional amendments can be proposed with a two-thirds vote from both the House of Representatives and the Senate or with a constitutional convention called for by two-thirds of the states’ legislatures.
Answer:
it allows them to collaborate with others to verify the results and it also adds value to the work
