Research ethics are general rules that are followed when doing experiments to insure that no permanent harm comes to the test subjects or anybody else as a result of the research. This is perhaps even more important in sociology because the test subjects are human.
You didn't include the options, but Brazil was one nation that gained independence in 1822.
The answer is b slave owners
Scarcity effects people's life's through different ways they are
scarcity of food and scarcity of water could cause to death
The Haitian Revolution,<span> was a successful </span>anti-slavery<span> and anti-</span>colonial<span> insurrection that took place in the former </span>French colony<span> of </span>Saint Domingue<span> that lasted from 1791 until 1804. It impacted the institution of </span>slavery <span>throughout the Americas. </span>Self-liberated slaves<span> destroyed slavery at home, fought to preserve their freedom, and with the collaboration of mulattoes, founded the sovereign state of </span>Haiti. <span>It led to the greatest slave uprising since </span>Spartacus<span>, who led </span>an unsuccessful revolt <span>against the </span>Roman Republic<span> nearly 1,900 years prior.</span>