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.
Quick Answer. The Articles of Confederation, the document that outlined how the United States would be governed prior to the Constitution, was written in 1775 on the principle of individual state independence and gave no power to the central government.