The United States is a sports-loving nation. Sports in America take a variety of forms;organized competitive struggles,which draw huge crowds to cheer,their favorite team to victory;athletic games,played for recreation anywhere sufficient space is found;and hunting and fishing. Most sports are seasonal,so that what is happening depends upon the time of the year. Some sports are called spectator sports,as the number of spectators greatly exceeds the number playing in the game. Other sports are called participant sports,drawing a crowd of onlookers only on special occasions,such as tournaments. some sports are commercial and professional with players who are paid for their participation and with the audiences who pay admission to watch. What is the topic of this paragraph?