Complex sentence: She worked professionally as a designer in Cuba during this time, but returned to her studies in the summer of 1934 under former Bauhaus instructors Josef and Anni Albers at Black Mountain College, North Carolina.
Split into simpler sentences: She worked professionally as a designer in Cuba during this time. In the summer of 1934 she traveled to the United States to study under former Bauhaus instructors, artists Josef and Anni Albers, at Black Mountain College, North Carolina.