16 total team at the beginning of the twentieth century
Yes, American League teams play against National League teams in interleague games during the regular season.
30 major League Teams 14 in the American League 16 in the National League
American League teams play the National League teams for four series per season, in what is called "interleague play." also, in the World Series, an American League team plays a National League team.
In 2010 there are 14 American League teams, and 16 National League teams.
No, the national league pitchers have to bat and all national league teams play by taht rule and all American league teams have a DH
There are 16 teams in the National League.
There are 14 teams in the American League. There are also 16 in the National League.
There were 30 teams in the MLB, 14 in the American League and 16 in the National League.
There are 15 teams in the American League and 15 teams in the National League for a total of 30.
Before the 2013 season, the Houston Astros relocated from the National League Central Division to the American League West Division. As a result, there are now 15 teams in the National League and 15 in the American League.
National League TeamsThere are 30 teams in Major League Baseball as of 2010; 16 teams in the National League, and 14 Teams in the American League. Each league is divided into three divisions, East, Central, and West. Recently the Montreal Expos moved to Washington, and named the Nationals. The Milwaukee Brewers was originally an American League team and moved to the National League in 1991. Below is the list of teams currently in the National League. National LeagueEastern DivisionAtlanta BravesFlorida MarlinsNew York MetsPhiladelphia PhilliesWashington Nationals Central DivisionChicago CubsCincinnati RedsHouston AstrosMilwaukee BrewersSt Louis CardinalsPittsburgh PiratesWestern DivisionArizona DiamondbacksColorado RockiesLos Angeles DodgersSan Diego PadresSan Francisco Giants
There are 16 National League teams and 14 American League teams for a total of 30.