In which league do the St. Louis Cardinals play?

In which league do the Los Angeles Dodgers play? In which league do the Boston Red Sox play? In which league do the Chicago Cubs play? In which league do the Chicago White Sox play? In which league do the Houston Astros currently play? In which division do the New York Yankees and Boston Red Sox play? In which division do the Los Angeles Dodgers and San Francisco Giants play? In which division do the Chicago Cubs and St. Louis Cardinals play?