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.
The Articles of Confederation, a compact among the thirteen original states, was written in 1776 but not ratified by the states until 1781. The loose league of friendship that it created reflected the founders' reaction to the central authority of King George III.