Today in class we had a test on migration. At first, I was scared that I would fail because I didn't study that much. When we took the test I realized I knew a lot more then I thought. The test had a lot of different things. One thing was Migration which is leaving from one country to another. Emigration is leaving a country and immigration is entering a country. Another thing is net migration which is the difference between the number of emigrants and number of immigrants. Circulation is moving every month or annually to different regions or countries.