The Enlightenment was crucial in determining almost every aspect of colonial America, most notably in terms of politics, government, and religion. Without the central ideas and figures of the Enlightenment, the United States would have been drastically different since these concepts shaped the country in its formative years. Both during and after the American Revolution<span> many of the core ideas of the Enlightenment were the basis for monumental tracts such as the Declaration of Independence and the Constitution. Concepts such as freedom from oppression, natural rights, and new ways of thinking about governmental structure came straight from Enlightenment philosophers such as </span>Locke<span> and forged the foundations for both colonial and modern America. All aspects of life, even religion, were affected by the Enlightenment and many key figures from American history such as Thomas Jefferson were greatly influenced by the movement.</span>
After the unification of China in the beginning of the Qin Dynasty, China's First Emperor, Qin Shihuang, linked the walls of the three northern states (Qin, Zhao, and Yan).
