Explain three important differences between the Articles of Confederation and the Constitution, and why each document was approved at the time it was written.

The difference between the Articles of Confederation and Constitution is that the Articles of Confederation are the rules that were agreed by the United States of America in the 18th century whereas the constitution is the rules that democratic countries and other legalized institutions develop to implement law and order in their body.

Explanation:

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explanation:

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the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.