After the civil war, much of the ownership for land was unattainable for free slaves due to the government opposing the idea. Instead most African slaves had to become sharecroppers on plantations where they had previously been slaves.
<span>"c. ethical standards are often overlooked by governments hungry for jobs or tax revenues" would be the best option, since developing countries usually lack the revenue needed to make things like government oversight a possibility. </span>
The Roman Republic ended when Caesar Augustus came to power.