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 was the first constitution of the United States of America and legally established the union of the states. Ultimately the Articles failed because they did not provide enough power to the central government. The Articles of Confederation were replaced by the Constitution.