What does article 1 of the constitution do

Article 1 of the U.S. Constitution gives Congress its powers and limits. Congress is the legislative branch of the government, meaning they are the ones to make laws for the United States of America. The article also creates the two sections of Congress, which is called a bicameral legislature.

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).

"this speech"? what speech are you talking about?