Complex sentence: Referred to as "Jambo", "the Jamboree", or NSJ, Scouts from all over the nation and world have the opportunity to attend these jamborees, considered to be one of several unique experiences that the BSA offers.
Split into simpler sentences: Referred to as "Jambo", "the Jamboree", or NSJ, Scouts from all over the nation and world have the opportunity to attend. They are considered to be one of several unique experiences that the BSA offers.