Epidemiologic Reviews, 20(1): 71-80. Data collection is the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.pidemiologic Reviews, 20(1): 71-80. Data collection is the process of gathering and measuring information on variables of interest, in an established systematic fashion that enables one to answer stated research questions, test hypotheses, and evaluate outcomes.
It succeeded the First Continental Congress, which met between September 5, 1774 and October 26, 1774, also in Philadelphia. The second Congress managed the colonial war effort, and moved incrementally towards independence, adopting the United States Declaration of Independence on July 4, 1776.
The American History section of the Library of Congress is separated by time period or subject and offers an in-depth look into the history of the United States. Declaration of Independence. The Declaration of Independence is one of the most important documents in the history of the United States. It took Thomas Jefferson 17 days to write the Declaration of Independence. On July 2, 1776, Congress voted to declare independence from Great Britain.