One of the significant changes in atmosphere in jefferson's administration was:

the number of common people involved in government
the closing of the bank of the united states
the widespread dismissal of federalist officeholders
the reinstatement of the alien and sedition acts

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).

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation: