Why would the united states be interested in annexing texas?

they had the texas ranger force

they had resources and established trading partners

they had no debt

they had a strong president

The correct answer is, they had resources and established trading partners

Explanation:

Texas was a large territory and had many natural resources that could propel the US economy. Moreover, the land was suitable for agriculture as well. The decision to acquire Texas proved to be wise as several centuries later they would find natural oils fields and even Gold!