During the Presidenty of Barak H Obama, the countries in North Africa and Middle-East experienced what is now called the Arab Spring.
These were small-scale protests by people against the government. Most people stood up against what they believed what injustice by Dictators. These eventually turned into Pro-Democracy protests and in some extreme cases turned into a civil war.
The original protests started in Tunisa and resulted in the removal of a dictator. They spread across to Egypt where Husni Mubarak was jailed and Muslim Brotherhood took over. Eventually the army stepped in and Egypt again is a dictatorship.
In Libya, it led to a full scale civil war which led to the capture and death of Gaddafi.
The legislative branch of the U.S. government is called Congress. Congress has two parts, the Senate and the House of Representatives. Congress meets in the U.S. Capitol building in Washington, DC. to the President.