Monarchy
Monarchy is one of the oldest kinds of government. Most historians agree that the first monarchies were tribes or small groups of people who decided to let a war-chief or other leader pass on their office to their children. This created a dynasty. Over time, the rules for deciding who got to become the next monarch became more complicated. Primogeniture is usually the oldest son or, in some countries, daughter, becomes the next monarch when the old one dies. Akkad and Sumer were the first recorded monarchies.