Complex sentence: Born in Hungary, Wells established his business in New York but in 1928 purchased the business of Henry Sotheran in London after Sotheran's death, making Wells a force in bookselling on both sides of the Atlantic.
Split into simpler sentences: Born in Hungary, Wells established his business in New York. In 1928 Wells purchased the business of the late Henry Sotheran in London, making him a force in bookselling on both sides of the Atlantic.