Mineral rights owners usually exercise their rights to extract oil and natural gas. If you own real estate, you need to understand the concept of mineral rights and how their ownership can impact your property. The website Geology notes that the United States is one of few countries that allow private individuals to own minerals rights.
Lincoln was morally opposed to slavery and politically opposed to any expansion of it. On October 16, 1854, in his  Peoria Speech , Lincoln declared his opposition to slavery, which he repeated in his route to presidency.
Lincoln did not end slavery in America. Remember, well before Lincoln was ever born slavery was already illegal in many states, especially in New England. Also, the Constitution had already ended the slave trade by 1808. The famed Emancipation Proclamation, which Lincoln did issue, only declared slaves in rebel-held territory free, which was, in a practical sense, ineffectual. It also did not apply to Confederate territory already captured by Union forces.