Urban slavery was well developed in Spanish America and Brazil. Slavery took a long time to get removed from these countries. Slavery in Brazil was prevalent in the country long before the Portuguese settlement started around the year 1532. Later on the colonists were also heavily dependent on the slaves.
I think the answer is b there you go
The introduction of communism by mao Zedong is different from the earlier collective farms in China because Mao Zedong exemplifies that communism was to have equality and that you will have where to live and what to eat and during this time, China was in devastation because of the failure of the dynasties and for poor people was really happy to hear about that promises of mao Zedong and how good is communism, however, mao Zedong did not mention that he will take all of their rights and force them to work for the state.