Complex sentence: Loyengo or Luyengo (as it was spelt) was the site of the Swaziland Agricultural College, which became the Swaziland Agricultural College and University Centre (SACUC) and was incorporated into the University of Botswana Lesotho and Swaziland (UBLS).
Split into simpler sentences: Loyengo or Luyengo (as it was spelt) was the site of the Swaziland Agricultural College. Which became the Swaziland Agricultural College and University Centre (SACUC) and was incorporated into the University of Botswana Lesotho and Swaziland (UBLS).