Who was the first president elected in the 20th century

Why did european nations face financial challenges after world war 1?

How does cooperative federalism work in the united states? a. state and federal governments have different and overlapping responsibilities b. branches of the federal government can check one another's power. c. when amending the constitution, citizens vote directly. d. bills passing the house of representatives must also pass the senate.

World war 1 and world war 2 were both concentrated in blank and blank in scope