Phoenix, Arizona supplied both water and electricity, becoming the first multi-purpose dam, and Roosevelt himself attended the official dedication on May 18, 1911. At the time, it was the largest masonry dam in the world, forming a lake in the mountain east of Phoenix. The dam would be renamed after Teddy Roosevelt in 1917, and the lake would follow suit in 1959. On February 14, 1912, Phoenix became a state capital, as Arizona was admitted to the Union as the 48th state under President William Howard Taft. This occurred just six months after Taft had vetoed a joint congressional resolution granting statehood
Admission to the Union States was governed by a unicameral Congress, the Congress of the Confederation, which operated under authority granted to it by the Articles of Confederation, the nation's first constitution. The 11th Article authorized Congress to admit new states to the Union provided nine states consented. Under the Articles, each state cast one vote on each proposed measure in Congress. During this period, the Confederation Congress enacted two ordinances governing the admission of new states into the Union. The first such ordinance was the Land Ordinance of 1784, enacted April 23, 1784. Thomas Jefferson was its principal author. The Ordinance called for