Complex sentence: The effects of the Russian Revolution and Prohibition in the United States, the company lost major ground during the early 20th century, though it quickly re-established itself during the Great Depression as an eminent wine-producer.
Split into simpler sentences: The effects of the Russian Revolution and Prohibition in the United States, the company lost major ground during the early 20th century. Though it quickly re-established itself during the Great Depression as an eminent wine-producer.