One enormously key event was the Great Depression. The Depression was a global phenomenon, and Germany suffered extreme rates of joblessness and inflation during those years. Germany's economic situation had been made even more difficult by the reparation payments imposed on it as part of the Peace of Versailles that concluded World War I. The very bad state of affairs in Germany allowed a radical group like the Nazis and a charismatic strongman like Hitler to come to power by making grand promises to the German people.
Coupled with the economic problems plaguing Germany, there was also a strong desire by the German people to feel pride in their nation again. The Peace of Versailles had forced Germany to accept the guilt or responsibility for causing World War I. Germany was forced to disarm itself and have only a very small volunteer army. Hitler's appeal to national strength and the rebuilding of Germany's military might made him a popular figure also.
Hitler also mastered the art of campaigning and propaganda. He traveled all over Germany making staged appearances that whipped audiences into a frenzy of enthusiasm for the nation and the National Socialist German Workers' Party (the Nazis).
There was a prejudice among the black and white people in the United States during the 20th century. Blacks were segregated from whites and racial discrimination was rampant until Martin Luther King Jr. stood up for the rights of the black people. The government is trying their best to be fair between blacks and whites.
The key difference between a federal government and a confederate government is in terms of the power assignment. In a federal system, more power is assigned to the central government while for a confederate system, most of the power is given to the states. Hope this answers the question.
Legislative Branch. According to Article I of the Constitution, the legislative branch (the U.S. Congress) has the primary power to make the country's laws. This legislative power is divided further into the two chambers, or houses, of Congress: the House of Representatives and the Senate. Hope I helped!