<span>One of the first transformations was the shift from agricultural economy to one based on wages and the exchange of goods and services. The second transformation was urbanization. The cities grew as the jobs grew. The debate on slavery emerged as a giant issue. The issue on the rights of states did as well. The Second Great Awakening happened during this time. Westward expansion also occurred. A war on Mexico happened in 1846 to acquire Texas, California, and all land in between.</span>
In May of 1856, an antislavery group killed settlers at "<span>Harpers Ferry, Virginia," since the goal was to start a wider movement that would wipe out more slave owners. </span>
The Cold War began after World War Two. The main enemies were the United States and the Soviet Union. The Cold War got its name because both sides were afraid of fighting each other directly. In a "hot war," nuclear weapons might destroy everything.
White flight; the move of white city-dwellers to the suburbs to escape the influx of minorities.
