Colorado in the American Civil War came to his defense and consequently Chivington was never court–martialed. Colorado in the American Civil War The Colorado Territory was formally created in 1861 shortly before the bombardment of Fort Sumter sparked the American Civil War. Although sentiments were somewhat divided in the early days of the war, Colorado was only marginally a pro-Union territory (four statehood attempts were thwarted, largely by Confederate sympathizers in July 1862, February 1863, February 1864, and January 1866). Colorado was strategically important to both the Union and Confederacy because of the gold and silver mines there as both sides wanted to use the mineral
Origins of the American Civil War Origins of the American Civil War Historians debating the origins of the American Civil War focus on the reasons why seven Southern states declared their secession from the United States (the Union), why they united to form the Confederate States of America (simply known as the "Confederacy"), and why the North refused to let them go. While most historians agree that conflicts over slavery caused the war, they disagree sharply regarding which kinds of conflict—ideological, economic, political, or social—were most important. The primary catalyst for secession was slavery, most immediately the political battle over the right of Southerners to bring