The Equal-Area Projection is a type of map projection that preserves the area of landmasses, ensuring that regions are represented in true proportion to their size on the Earth's surface. This means that while shapes and angles may be distorted, the relative size of countries and continents remains accurate, making it useful for comparing areas. Common examples of equal-area projections include the Albers Conic and Mollweide projections. These projections are often used in thematic mapping, where understanding the size of different regions is crucial, such as in population studies or resource distribution analysis.