Complex sentence: The CONCACAF Under-20 Championship was expanded to 12 teams beginning in 2011 and determined the 4 CONCACAF teams that participated at the 2011 FIFA U- 20 World Cup to be held in Colombia.
Split into simpler sentences: The CONCACAF Under-20 Championship was expanded to 12 teams beginning in 2011. The tournament determined the four CONCACAF teams that participated at the 2011 FIFA U- 20 World Cup to be held in Colombia.