Soccer has long been the most popular sport around the world. American interest in the game has never been higher. And Major League Soccer is the most successful US soccer league in history. Inside MLS will give readers a look at the iconic teams, legendary players, and memorable moments in the league's history. Soccer has long been the most popular sport around the world. American interest in the game has never been higher. And Major League Soccer is the most successful US soccer league in history. Learn more about Toronto FC, who won the MLS Cup in 2017! Title includes a timeline, fast facts, a glossary, further readings, online resources, and an index. AGES: 8 to 12