1801 La Salle, a French Explorer, in 1762, went on a tour of discovery and found a rich but weed-grown section that Spain was neglecting, which he claimed for France and called it the "Louisiana District" for Louis XIV, a name used by nearly every other King of France in those centuries. Spain expostulated and then became violent. Agitation went on. War was threatened. The trouble was not ended until 1801 when Napoleon, while strangling Spain, forced her to cede the disputed territory to him; it being the tract lying east of the Arkansas River up to a certain point, then crossing the Divide south to the Red River which it followed to its source, thence along the eastern foot-hills of the Rocky Mountains. This divided Colorado, leaving with Spain that portion lying west of the Rocky Mountains, and giving to France what was located east of the mountains. Thus was left "No Man's Land" out of the reckoning, which included these majestic, wealth-producing and health-yielding mountains. They seemed to be too inconsequential to be claimed by either country. Mountains, that by their impassive quietude have soothed into tranquility the restless nerves of thousands of sick; mountains, that brew unceasingly nature's healing balm for ailing lungs; that are the home of twenty-four rivers, whose never ending flood of life giving waters, lure riches from the farms, like the touch of an Aladdin's Lamp; that have produced in furs, lumber, gold, silver, lead, copper, zinc, iron, stone, marble, oil, live stock and agricultural products, nearly five billion dollars.
"The stone which the builders rejected, the same is become the head of the corner."
1803 Two years passed, and for the first time Colorado began to be appreciated. 1803 saw sixteen million dollars in gold flowing to France, and the Louisiana District, which included the eastern half of Colorado, coming to the United States. This brought under the flag of our Government for the first time, that part of Colorado lying east of the mountains.
1812 Louisiana in 1812 was admitted into the union as a territory according to the State boundaries that exist at the present time. Missouri Territory was the name given to what was left of the Louisiana Purchase. Thus Colorado lying east of the mountains fell heir to Missouri. The name is taken from the Missouri's tribe of Indians.
Next to the priceless heritage that came to us as a nation and as individuals in the vast domain that we received from the Indians, was the rich transference of Indian words into our language. It was like the transfusion of new corpuscles into blood emaciated and impoverished by disease. Here was a vacant world. Rivers, mountains, states, cities, towns, boundaries—all a blank. Ready at hand was a new language. It possessed crispness, freshness, strength, romance. We absorbed it and never awoke to the full appreciation of its beauties until Longfellow charmed and thrilled us with his matchless songs.
1823 It was in 1521 that Cortez placed the foot of Spain on the neck of Mexico. Three hundred years later, Mexico rebelled. She had to fight, and succeeded in establishing her independence in 1823. This carried into the fold of Mexico, that part of Colorado lying west of the mountains, which had continued all these centuries to belong to Spain. When Mexico came from under the Dominion of Spain, she wanted to be free from slavery and objected to Texas bringing slaves into Mexican Territory and selling them. This quarrel between Texas and Mexico really brought about the war between Mexico and the United States.
1834 In 1834 that portion of the Missouri Territory lying west of the Missouri River became the Indian Country, which was the official title; presumably "country" because there was no territorial government and it so remained for twenty years. So to the Indian country went all of Colorado east of the mountains, and north of the Arkansas River.
1836 Texas was once a Republic. In 1836 it had a Government of its own separate from both Mexico and the United States, and independent of both. She proceeded to reach into and through Colorado, and claimed that part above the Arkansas River lying between Mexico's line on the west of the mountains, and the Missouri line on the east of the mountains. This made a home for "No Man's Land."
1845 Texas was admitted into the Union in 1845, as a territory in her present form. This threw back into chaos all she had claimed of Colorado, and left it as "Unorganized Territory." In 1846 Texas plunged the United States into War with Mexico, supposedly over the western boundary of Texas. In two years twenty-three noted battles were fought, including Palo Alto, Buena Vista and Vera Cruz. Only twenty-three years after Mexico threw off the yoke of Spain, we marched into Mexico City and took from her practically all the territory north of her present boundary. It was ceded to the United States in 1848, and in 1850 became New or Upper California. It was divided in 1855 into three parts, named California, New Mexico and Utah, the latter called after the tribe of Utah Indians. This brought under the United States Flag for the first time, that portion of Colorado west of the mountains, which had been Mexican Territory, and which now became a part of the Territory of Utah, whose western boundary was California. New Mexico received that part of Colorado lying south of the Arkansas River, and east of the Rio Grande.
1851 In 1851, by the Treaty of Fort Laramie, it was stipulated that the part of Colorado east of the Rocky Mountains and north of the Arkansas River should belong to the tribes of the Arapahoe and Cheyenne Indians, which title was later extinguished by the Treaty of Fort Wise.