The answer is C<span>. a continued pattern of unequal economic relations despite the formal end of colonial political and military control.</span>
The European country was Spain. Spanish conquistadors were the first to explore and map out Texas in 1519.
The main way in which geographic and economic differences between regions led to increased sectionalism in the US was that the South was entirely agrarian and depended heavily on slavery, while the North despised the institution of slavery. This eventually led to the Civil War.
