Complex sentence: At this time, they also returned to their ancestral roots with a Hungarian colony in New York and began preserving Hungarian history and culture in their work, as well as painting under contract for the Ecclesiastical Arts of New York Studio to restore and decorate church ceilings.
Split into simpler sentences: At this time, they also returned to their ancestral roots with a Hungarian colony in New York and began preserving Hungarian history and culture in their work. In addtion, the Makks were painting under contract for the Ecclesiastical Arts of New York Studio to restore and decorate church ceilings.