Timeline of events leading to the American Civil War colonial period in Virginia, slavery had been a part of the socioeconomic system of British North America and was recognized in the Thirteen Colonies at the time of the United States' Declaration of Independence (1776). Since then, events and statements by politicians and others brought forth differences, tensions and divisions between the people of the slave states of the Southern United States and the people of the free states of the Northern United States (including Western states) over the topics of slavery. The large underlying issue from which other issues developed was whether slavery should be retained and even expanded
United States Declaration of Independence period, and a book that Benjamin Franklin said was "continually in the hands of the members of our Congress". Armitage writes, "Vattel made independence fundamental to his definition of statehood"; therefore, the primary purpose of the Declaration was "to express the international legal sovereignty of the United States". If the United States were to have any hope of being recognized by the European powers, the American revolutionaries first had to make it clear that they were no longer dependent on Great Britain. The Declaration of Independence does not have the force of law domestically, but nevertheless it may help to