Question answered:
There are 50 states in the United states of America. Here is the list of these states and the dates on which they join the union;
- Delaware, – December 7, 1787
- Pennsylvania, – December 12, 1787
- New Jersey, – December 18, 1787
- Georgia, – January 2, 1788
- Connecticut, - January 9, 1788
- Massachusetts, – February 6, 1788
- Maryland, - April 28, 1788
- South Carolina, – May 23, 1788
- New Hampshire, – June 21, 1788
- Virginia, – June 25, 1788
- New York, – July 26, 1788
- North Carolina, – November 21, 1789
- Rhode Island, – May 29, 1790
- Vermont, – March 4, 1791
- Kentucky, – June 1, 1792
- Tennessee, – June 1, 1796
- Ohio, – March 1, 1803
- Louisiana, – April 30, 1812
- Indiana, - December 11, 1816
- Mississippi, – December 10, 1817
- Illinois, – December 3, 1818
- Alabama, – December 14, 1819
- Maine, – March 15, 1820
- Missouri, – August 10, 1821
- Arkansas, – June 15, 1836
- Michigan, – January 26, 1837
- Florida, – March 3, 1845
- Texas, – December 29, 1845
- Iowa, – December 28, 1846
- Wisconsin, – May 29, 1848
- California, – September 9, 1850
- Minnesota, – May 11, 1858
- Oregon, – February 14, 1859
- Kansas, – January 29, 1861
- West Virginia, – June 20, 1863
- Nevada, – October 31, 1864
- Nebraska, – March 1, 1867
- Colorado, – August 1, 1876
- North Dakota, – November 2, 1889
- South Dakota,- November 2, 1889
- Montana,- November 8, 1889
- Washington, – November 11, 1889
- Idaho,- July 3, 1890
- Wyoming, – July 10, 1890
- Utah, – January 4, 1896
- Oklahoma, – November 16, 1907
- New Mexico, – January 6, 1912
- Arizona, – February 14, 1912
- Alaska, – January 3, 1959
- Hawaii, – August 21, 1959
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