What are some dangers or negative things that could possibly happen if the rules for rejoining the Union were too strict?

before, mexicans where an indian tribe but when the spanish took over, they changed their language to spanish.

hope this : d

maybe you should ask google for the answer for the question you're looking for

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).