Complex sentence: As tensions over nullification escalated, South Carolina Senator Robert Y. Hayne was considered less capable than Calhoun to represent South Carolina in the Senate debates, so in late 1832 Hayne resigned to become governor.
Split into simpler sentences: As tensions over nullification escalated, South Carolina Senator Robert Y. Hayne was considered less capable than Calhoun to represent South Carolina in the Senate debates. So in late 1832 Hayne resigned to become governor.