Complex sentence: In 1988, it acquired a 90% stake in A. E. Staley, a US corn processing business and in 1998 it brought "Haarmann & Reimer", a citric acid producer; in 2000 it acquired the remaining minorities of Amylum and A. E. Staley.
Split into simpler sentences: In 1988, it acquired a 90% stake in A. E. Staley, a US corn processing busines. In 2000 it acquired the remaining minorities of Amylum and A. E. Staley.