Complex sentence: In 1880, Kim Hong-jip undertook an official mission to Japan where he learned first-hand of the modernizing reforms taking place in that country and inspiring in him a desire to effect such changes in Korea.
Split into simpler sentences: In 1880, Kim Hong-jip undertook an official mission to Japan where he learned first-hand of the modernizing reforms taking place in that country. This inspired in him a desire to effect such changes in Korea.