What are ways for congress to influence foreign policy?

Parliamentary participation in the foreign policy decision-making process is practically nil or that boils down to the role of chancelling the treaties agreed by the Executive, in addition to the ratification of treaties, other forms of participation available to Congress.

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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.