Complex sentence: In 1869, the second Rajah also invited Chinese pepper-growers from Singapore to cultivate black pepper in Sarawak, and by the early 20th century; the kingdom become one of the world major producer of pepper.
Split into simpler sentences: In 1869, the second Rajah also invited Chinese pepper-growers from Singapore to cultivate black pepper in Sarawak. By the early 20th century; it became one of the world major producer of pepper.