| | The American states which had already been admitted but did not secede in 1861 are collectively known as the '''Union.''' In alphabetical order they were [[California]], [[Connecticut]], [[Delaware]], [[Illinois]], [[Indiana]], [[Iowa]], [[Kentucky]], [[Maine]], [[Maryland]], [[Massachusetts]], [[Michigan]], [[Minnesota]], [[Missouri]], [[New Hampshire]], [[New Jersey]], [[New York]], [[Ohio]], [[Oregon]], [[Pennsylvania]], [[Rhode Island]], [[Vermont]], [[Washington]] and [[Wisconsin]], for a total of 23. During the war, [[Kansas]], [[Nevada]] and [[West Virginia]] were added for a wartime high of 26, as against 11 for the [[Confederacy]]. The Union's [[demography|demographic]] and [[industry|industrial]] advantage was somewhat greater than the 2.5 to 1 ratio of states would suggest. | | The American states which had already been admitted but did not secede in 1861 are collectively known as the '''Union.''' In alphabetical order they were [[California]], [[Connecticut]], [[Delaware]], [[Illinois]], [[Indiana]], [[Iowa]], [[Kentucky]], [[Maine]], [[Maryland]], [[Massachusetts]], [[Michigan]], [[Minnesota]], [[Missouri]], [[New Hampshire]], [[New Jersey]], [[New York]], [[Ohio]], [[Oregon]], [[Pennsylvania]], [[Rhode Island]], [[Vermont]], [[Washington]] and [[Wisconsin]], for a total of 23. During the war, [[Kansas]], [[Nevada]] and [[West Virginia]] were added for a wartime high of 26, as against 11 for the [[Confederacy]]. The Union's [[demography|demographic]] and [[industry|industrial]] advantage was somewhat greater than the 2.5 to 1 ratio of states would suggest. |