The Articles of Confederation were the first constitution of the United States, adopted by the Continental Congress on November 15, 1777, and ratified by all thirteen states on March 1, 1781. The Articles created a loose confederation of sovereign states and a weak central government, leaving most of the power with the state governments. The Articles established a unicameral legislature, with each state having one vote, and no executive or judicial branches. The central government had limited powers, including the ability to conduct foreign affairs, declare war, and regulate coinage. However, it could not levy taxes or regulate commerce, which led to economic problems and difficulties in funding the Revolutionary War. The Articles were replaced by the United States Constitution on March 4, 1789, after the need for a stronger federal government became apparent.