They passed the Truman<span> Doctrine.</span>
<span>Anglo-American colonization in Mexican Texas took place between 1821 and 1835. ... Spain expected the new settlers to increase economic development and help deter the .... Pioneersalong the Colorado River suffered most. .... but the suspicions raised by the Fredonia Rebellion deterred their efforts.</span><span>
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I know that it is either the political system or their religious beliefs, but i am not entirely certain.