Answer:
They caused work slowdowns
Technology
division of labor
political organization
<span>commerce and trade</span>
East and West Berlin were separated by the "Berlin Wall" during that Cold War that existed between the United States and Soviet Russia, since this was meant to keep people in East Berlin from fleeing to the western half.
"non-military air traffic was temporarily grounded" "the Department of Homeland Security was created" and "<span>United States began the War on Terrorism" are all correct. We were allies with Saudi Arabia. </span>
An attitude of both liberalism and nationalism.
In Europe in 1830 and 1848 there were a number of revolution movements, trying to replace old conservative governments. The revolutions often had a liberal flavor -- wanting "liberty" and political rights, vesting power in parliaments rather than just in kings and aristocracies. There also were nationalist feelings that spurred some of the revolutionary movements. In places like the Italian peninsula and German territories, that meant creating a united Italy or Germany.