Final answer:
In a presidential system, the electoral college plays a role in selecting the leadership. This contrasts with a monarchy, where a small elite group holds power, and a republic, which has no hereditary ruling class and relies on democratically elected representatives.
Step-by-step explanation:
In a presidential system, citizens generally have a say in the selection of the leadership through the electoral process, with some countries specifically using an electoral college. In this system, the chief executive, often called the president, holds significant powers, including vetoing legislation and being subject to impeachment. Unlike parliamentary systems where the chief executive is typically chosen by the parliament, the presidential system allows for direct or indirect citizen involvement in electing the president. This method helps prevent any single group, such as a monarch, parliament, or military council, from having undue influence over leadership selection.
Regarding the forms of government, a monarchy is an example where a small group of elite, typically the royal family, holds political power, as opposed to direct democracy where power is exercised directly by the people.
In a republic, there is no hereditary ruling class, it relies on popular sovereignty, and is led by representatives chosen by the people. A republic is not governed by a monarch, which differentiates it from monarchical systems.