what states where part of mexico in 1821 ? Florida California Texas Maine Arizona New Mexico Colorado Utah Oregon
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In 1821, several of the current U.S. states were indeed part of the territory of Mexico upon its independence from Spain. Among them were California, Texas, Arizona, New Mexico, and Utah. However, your list includes states that were not entirely under Mexican control in 1821, such as Colorado and Oregon. Colorado was only partially within the boundaries of Mexican territory, with different parts of it claimed by Mexico, France, and later the United States. Oregon, on the other hand, was not under Mexican control, as it was part of the Oregon Country, which was the subject of overlapping claims by the United States, the United Kingdom, and to some extent Russia. It didn't definitively become a part of the United States until 1846 with the Oregon Treaty between the U.S. and Great Britain.