Africaâs most active volcano, Mount Nyiragongo is located in Virunga National Park in the Democratic Republic of Congo. The main crater is 2km wide and, since 1882, it has erupted at least 34 times.
Dual federalism was used in the U.S. under Jacksonian democracy (Andrew Jackson), emphasizing local autonomy and individual liberty. After the Civil War, the federal government increased power and moved away from dual federalism. Key Terms laissez-faire: an economic environment in which transactions between private parties are free from tariffs, government subsidies, and enforced monopolies with only enough government regulations sufficient to protect property rights against theft and aggression.
The most common routes to dual (or triple or more) citizenship are birth, marriage, or naturalization. For example, if you are born in the United States, you automatically become a citizen here. But if your parents are nationals --citizens--of Mexico, for example, you will also be a Mexican citizen.