In the long term, the Mongol-enforced movement of conquered peoples from their homelands to distant parts of the empire facilitated the exchange of ideas and techniques, as exemplified by the flow of Chinese technology and artistic conventions westward to the Middle East and Europe
Richard Nixon was the first president to ever resign from the presidency. He did so so he could avoid being the first president to ever be impeached.
During the 1930s, the combination of the Great Depression and the memory of tragic losses in World War I contributed to pushing American public opinion and policy toward isolationism. Isolationists advocated non-involvement in European and Asian conflicts and non-entanglement in international politics.
The government created the Department of Homeland Security in 2002.
Americans were worried about terrorism in general during this time due to the attacks on the twin towers on September 11, 2001. This attack on American soil shook America's foundation and caused an increased amount of fear. The citizens looked to the government to increase security/investigations to ensure that this did not happen again. Hence the creation of the Department of Homeland Security.
This government agency is focused on several different categories. This includes: cyber security/cyber terrorism, border safety, anti-terrorism (aka terrorism prevention), and disaster prevention. This agency still exists today and plays a huge role in preventing attacks on American soil.
The division of powers is between State and National Governments.
