Complex sentence: Throughout the 1980's the company continued to expand and include various labels such as Perry Ellis Collection, Perry Ellis Portfolio, and, in 1984, Perry Ellis America in cooperation with Levi Strauss.
Split into simpler sentences: Throughout the 1980s the company continued to expand and include various labels such as Perry Ellis Collection and Perry Ellis Portfolio. In 1984, Perry Ellis America was created in cooperation with Levi Strauss.