Why was britain eager to have china buy products from western countries as well as sell products to them

The  British were anxious to get access to Chinese consumers and to access China's products in the West. The Open Door policy was essential for accomplishing this goal.

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.