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			 Date | 
			 Event(s) | 
		
	
| 1  | 1857  | - 4 Mar 1857—4 Mar 1861: Buchanan/Breckenridge admin
 
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| 2  | 1860  | - 1860—8 Apr 1865: Civil War
 
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| 3  | 1861  | - 4 Feb 1861—4 Feb 1861: Confederate States of America formed
 
- 23 Feb 1861—23 Feb 1861: Texas 7th state to secede from the Union
 
- 4 Mar 1861—15 Apr 1865: Lincoln/Hamlin and Johnson admin
 
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| 4  | 1862  | - 1862—1862: Sabine Pass: Yellow Fever epidemic
 
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| 5  | 1863  | - 1863—10 May 1869: Construction of First Transcontinental Railroad
 
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| 6  | 1865  | - 1865—1877: Reconstruction Period
 
- 4 Apr 1865—4 Mar 1869: Johnson/(vacant) admin
 
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| 7  | 1868  | - 1 Jun 1868—1 Jun 1868: Texas constitutional convention meets in Austin
 
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| 8  | 1869  | - 4 Mar 1869—4 Mar 1877: Grant/Colfax and Wilson admin
 
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| 9  | 1877  | - 4 Mar 1877—4 Mar 1881: Hayes/Wheeler admin
 
  | 
| 10  | 1881  | - 4 Mar 1881—9 Sep 1881: Garfield/Arthur admin
 
- 19 Sep 1881—4 Mar 1885: Arthur/(vacant) admin
 
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| 11  | 1885  | - 4 Mar 1885—4 Mar 1889: Cleveland/Hendricks and (vacant) admin
 
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| 12  | 1889  | - 4 Mar 1889—4 Mar 1893: Harrison/Morton admin
 
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| 13  | 1893  | - 4 Mar 1893—4 Mar 1897: Cleveland/Stevenson admin
 
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| 14  | 1897  | - 4 Mar 1897—9 Sep 1901: McKinley/Hobart and (vacant) admin
 
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| 15  | 1901  | - 14 Sep 1901—4 Mar 1909: T Roosevelt/Fairbanks admin
 
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| 16  | 1909  | - 4 Mar 1909—4 Mar 1913: Taft/Sherman and (vacant) admin
 
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| 17  | 1913  | - 4 Mar 1913—4 Mar 1921: Wilson/Marshall admin
 
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| 18  | 1917  | - 6 Apr 1917—28 Jun 1919: World War I (U.S.involvement)
 
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| 19  | 1918  | - 1918—1918: Spanish Influenza (more people hospitalized in WWI from influenza than wounds. US Army training camps became death camps with 80% death rate in some camps)
 
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| 20  | 1920  |  |