National football teams represent their countries in international competitions, such as the FIFA World Cup and continental tournaments like the UEFA European Championship. Each team is made up of players who are citizens of that country, and they compete to showcase their skills and bring pride to their nation. These teams are governed by national football associations, which are responsible for organizing matches, training, and player selection. Popular national teams include Brazil, Germany, and Argentina, each with a rich history and passionate fan bases that support them during competitions.