Why do countries trade rather than produce their own?

Countries trade rather than produce everything on their own primarily to take advantage of comparative advantage, where they specialize in producing goods that they can make more efficiently than others. This specialization allows for a greater variety of products and services, as well as lower prices for consumers. Additionally, trade enables countries to access resources, technologies, and markets that they may lack domestically, fostering economic growth and innovation. Ultimately, trading enhances global interdependence and economic stability.