Complex sentence: He was obese and was widely unpopular with many offended by his treatment of his wife, and had been struggling to manipulate the government which was seen as a corrupt oligarchy by radicals who went as far as civil war following the revolutions which shook America and France.
Split into simpler sentences: He was obese and was widely unpopular with many offended by his treatment of his wife. He had also been struggling to manipulate the government which was seen as a corrupt oligarchy by radicals who went as far as civil war following the revolutions which shook America and France.