Who or what delayed U. S recognition of texas as an independent republic

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.

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china has confucianism thats everywhere in asia but it isn't really a religion.  

do u have any answer choices?