Prime Ministers are the heads of government in many countries, responsible for overseeing the administration and implementing policies. They are typically elected by the parliament and play a crucial role in shaping national legislation and governance. Notable examples include Winston Churchill in the United Kingdom and Indira Gandhi in India. The role of a Prime Minister varies by country, with some having significant powers while others operate within a more ceremonial framework. They often represent their nation in international affairs and are key figures in political parties, influencing both domestic and foreign policy decisions.