1 the use of a variety of data sources (data triangulation) 2  the use of several different researchers (investigator triangulation) 3  the use of multiple perspectives to interpret the results (theory triangulation)  the use of multiple methods to study a research problem (methodological triangulation)
The Articles of Confederation was the United States' first constitution. Proposed by the Continental Congress in 1777, it was not ratified until 1781.
Because the role of the Articles of Confederation was to give only state's rights, the Founding Fathers realized that something needed to be done to fully unite the states through a federal government. And through that, came the Constitution, which has become the oldest constitution written in the world.