A campaign is a planned series of activities aimed at achieving a specific goal, often in areas like politics, marketing, or social causes. For example, a political campaign seeks to gain support for a candidate, using strategies like advertisements, rallies, and debates to connect with voters. In marketing, a campaign promotes a product or service through various channels, such as social media, television, and print. Companies like Coca-Cola or Apple often run campaigns to create buzz and attract customers. Overall, campaigns are essential tools for influencing public opinion and driving action.