Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: The American League ( or AL ) is one of the two leagues that make up Major League Baseball ( MLB ) .
A:
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 .