The Fourteenth Amendment details the Citizenship Clause, which states the ways that a person can become a citizen. The Civil Rights Act of 1866 granted equal citizen rights to African Americans. I believe the correct answer to your question is B.
1777 and was amended in 1778 and 1779. (This is in the US)
Enlightenment thinkers promoted the idea of the rights of citizens and the people's authority to create--and to change--their own governments. The works of Enlightenment philosophers such as John Locke, Baron de Montesquieu, and Jean-Jacques Rousseau were read by leaders of the revolution movements in America. The American Revolution sought to put those Enlightenment ideas into practice in creating a government based on liberty and justice for all.
As an example of one Enlightenment philosopher's political thoughts that influenced the American revolution, let's look at John Locke. According to Locke's view, a government's power to govern comes from the consent of the people themselves -- those who are to be governed. This was a change from the previous ideas of "divine right monarchy" -- that a king ruled because God appointed him to be the ruler. Locke repudiated the views of divine right monarchy in his <em>First Treatise on Civil Government.</em> In his<em> Second Treatise on Civil Government</em>, Locke argued for the rights of the people to create their own governments according to their own desires and for the sake of protecting their own life, liberty, and property.
The American founding fathers read Locke (as well as other Enlightenment writers like Montesquieu and Rousseau). The American Revolution (1775-1783) was inspired by these ideas.
Even after the slaves had been legally freed they were still oppressed and segregated from white Americans. Newly freed African Americans wanted to fully gain their freedom.