What did the term "Annexation of Texas" imply about the United States' approach to territories?

The term "Annexation of Texas" is primarily associated with the United States' policy of expansionism during the 19th century. This period was marked by a strong belief in Manifest Destiny, the idea that Americans were destined to expand across the North American continent. The annexation of Texas in 1845 was a significant step towards fulfilling this ideology, as it involved incorporating a large territory that had once been an independent republic.

This act not only reflected the desire to grow the nation’s borders but also underscored the U.S. government's willingness to absorb regions that had differing political and social structures from those established in existing states. The annexation was controversial, particularly regarding the implications for the spread of slavery, but nonetheless, it exemplified how the U.S. aimed to expand its territory and influence across the continent, solidifying its reputation as an expanding power.

In contrast, the other options do not accurately capture the historical significance of the annexation. Encouraging independent states implies a restriction on the U.S. influence, which was not the case. Limiting the spread of slavery is a misleading interpretation since the annexation of Texas actually exacerbated tensions over slavery, especially with the admission of Texas as a slave state. Lastly