Complex sentence: The Packers adopted the nickname "Packers" because they were sponsored by the Indian Packing Company, and later had "ACME PACKERS" written on their uniforms in the early 1920s after the Acme Packing Company bought Indian Packing.
Split into simpler sentences: The Packers adopted the name "Packers" because they were sponsored by the Indian Packing Company. They later had "ACME PACKERS" written on their uniforms in the early 1920s after the Acme Packing Company bought Indian Packing.