Complex sentence: This was the building of soccer-specific stadia for all the league's teams, and in 2003, the "cathedral of American Soccer", the Home Depot Center, was built to house the LA Galaxy, and both senior national teams.
Split into simpler sentences: This was the building of soccer-specific stadiums for all the league's teams. In 2003, the "cathedral of American Soccer", the Home Depot Center, was built to house the LA Galaxy, and both senior national teams.