Complex sentence: In the 1960s young people began to visit the Taizé community, and the first international young adults meeting was organized in Taizé in 1966 with 1400 participants from 30 countries.
Split into simpler sentences: In the 1960s young people began to visit the Taizé community. The first international young adults meeting was organized in Taizé in 1966 with 1400 participants from 30 countries.