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Designer. various. Design date. 1999–2008. The 50 State quarters (authorized by Pub. L. 105–124 (text) (PDF), 111 Stat. 2534, enacted December 1, 1997) was a series of circulating commemorative quarters released by the United States Mint. Minted from 1999 through 2008, they featured unique designs for each of the 50 US states on the reverse .
The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways. The Mississippi River is the largest drainage basin in the United States. [3] In the United States, the Mississippi drains about 41% of the country's rivers.
Map showing the Upper and Lower Colorado River Basin, and adjacent areas supplied by Colorado River water. The Colorado River Basin consists of 246,000 square miles (640,000 km 2), making it the seventh largest drainage basin in North America. [2] About 238,600 square miles (618,000 km 2), or 97 percent of the basin, is in the United States. [40]
In the 2020 United States Census, the city had 639,111 residents, ranking it the 27th most populous city in the United States. [ 160 ] [ 161 ] Of the large shrinking cities in the United States, Detroit has had the most dramatic decline in the population of the past 70 years (down 1,210,457) and the second-largest percentage decline (down 65.4%).
60,000 Indigenous Americans forcibly relocated to Indian Territory. The Trail of Tears was the forced displacement of approximately 60,000 people of the "Five Civilized Tribes" between 1830 and 1850, and the additional thousands of Native Americans within that were ethnically cleansed by the United States government.
Today about 50% of drinking water comes from desalination, 40% from the mining of non-renewable groundwater, and 10% from surface water in the mountainous southwest of the country. [343] Saudi Arabia is suffering from a major depletion of the water in its underground aquifers and a resultant break down and disintegration of its agriculture as a ...
The low corona, near the surface of the Sun, has a particle density around 10 15 m −3 to 10 16 m −3. [ 83 ] [ e ] The average temperature of the corona and solar wind is about 1,000,000–2,000,000 K; however, in the hottest regions it is 8,000,000–20,000,000 K. [ 84 ] Although no complete theory yet exists to account for the temperature ...
Vivek Ganapathy Ramaswamy ( / vɪˈveɪk rɑːməˈswɑːmiː /; [ 1][ 2] vih-VAYK rah-mə-SWAH-mee; born August 9, 1985) is an American entrepreneur. He founded Roivant Sciences, a pharmaceutical company, in 2014. In February 2023, Ramaswamy declared his candidacy for the Republican Party nomination in the 2024 United States presidential election.