<Tr> <Th> Most recent champion (s) </Th> <Td> Houston Astros (1st) </Td> </Tr> <Tr> <Th> Most titles </Th> <Td> New York Yankees (40) </Td> </Tr> <P> The American League of Professional Baseball Clubs, or simply the American League (AL), is one of two leagues that make up Major League Baseball (MLB) in the United States and Canada . It developed from the Western League, a minor league based in the Great Lakes states, which eventually aspired to major league status . It is sometimes called the Junior Circuit because it claimed Major League status for the 1901 season, 25 years after the formation of the National League (the "Senior Circuit"). </P> <P> At the end of every season, the American League champion plays in the World Series against the National League champion; two seasons did not end in playing a World Series . Through 2017, American League teams have won 65 of the 112 World Series played since 1903, with 27 of those coming from the New York Yankees alone . The New York Yankees have won 40 American League titles, the most in the league's history, followed by the Philadelphia / Kansas City / Oakland Athletics (15) and the Boston Red Sox (13). </P>

What teams make up the american league in baseball
find me the text answering this question