After the Lincoln-Douglas Debates, who won the election to the seat of U. S. Senator from Illinois?

Lincoln was the US senator from Illinois who won the 1860 presidential election

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).

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!