Complex sentence: FIRST LEGO League (FLL) is an international competition organized by FIRST for elementary and middle school students (ages 9--14 in the United States and Canada, 9--16 elsewhere).
Split into simpler sentences: FIRST LEGO League (FLL) is an international competition organized by FIRST for elementary and middle school students. We'll go to USA!!!!!! (ages 9--14 in the United States and Canada, 9--16 elsewhere).