The answer is A, treated like property and had hard lives.
Answer:
Einstein's greatest equation, E = mc2, is a triumph of the power and simplicity of fundamental physics. Matter has an inherent amount of energy to it, mass can be converted (under the right conditions) to pure energy, and energy can be used to create massive objects that did not exist previously. Thinking about problems in this way enabled us to discover the fundamental particles that make up our Universe, to invent nuclear power and nuclear weapons, and to discover the theory of gravity that describes how every object in the Universe interacts. And the key to figuring the equation out? A humble thought experiment, based on one simple notion: that energy and momentum are both conserved. The rest? It's just an inevitable consequence of the Universe working exactly as it does
The 15th Amendment to the United States Constitution was one of the three improvements made to the United States Constitution after the Civil War, it was known also as the Civil War Amendment. The motivation of the 15th Amendment was to guarantee that states or communities were not invalidating men the right to vote, simply, because of their race.
After the Civil War, America needed to be reconstructed socially an structurally. During the reconstruction of the South, some Sothern states still fond ways to discriminate former slaves, and restrict voting to white men only. These restrictions on voting were revoked by the 15th Amendment, which President Jackson tried to reject with no success. Many states tried to deprive the black voters by creating preferential laws. One of such laws was the "Grandfather Clause", which stated that those who had the benefit or the right to vote prior to 1866 or 1867, or their lineal descendants, would be free from educational, property or tax requisites in order to vote.
As the last of the Civil War Amendments the 15th Amendment permit former slaves to congregate and select people to represent them. This amendment is important as an equitable principle, in deciding who has the right to vote; it acts as a significant event in the correction of the United States Constitution tp guarantee civil rights in general and voting rights, specially for its multiple racial population.
