Complex sentence: In the 1857 Secession a group of more conservative members in Michigan led by Gijsbert Haan separated from the RCA and organized the Christian Reformed Church in North America (CRC), and other churches followed.
Split into simpler sentences: In the 1857 Secession, a group of more conservative members in Michigan led by Gijsbert Haan separated from the RCA. They organized the Christian Reformed Church in North America (CRC), and other churches followed.