Complex sentence: In 1988, Twentieth Century Fox became the first American film studio to set up a distribution office in South Korea, followed by Warner Brothers (1989), Columbia (1990), and Walt Disney (1993).
Split into simpler sentences: In 1988, Twentieth Century Fox became the first American film studio to set up a distribution office in South Korea. This was soon followed by Warner Brothers (1989), Columbia (1990), and Walt Disney (1993).