A one-party system of government refers to a political system in which only one political party is allowed to hold power and govern the country. This system can lead to autocracy, which is a form of government where an individual or a small group of people hold absolute power, often suppressing the rights and freedoms of citizens. In a one-party system, there is little to no opposition, which can lead to corruption and abuse of power. Without a robust system of checks and balances, the ruling party can become an oligarchy, where a small group of people hold power and control over resources, policies, and decision-making, while the majority of the people are excluded. Thus, a one-party system of government can lead to a lack of political pluralism, limited political participation, and stifle freedom of speech and expression.