Complex sentence: He moved to Keosauqua, Iowa in 1841, where he practiced law; he also owned a newspaper in Keosauqua and, in 1849, moved the newspaper to Keokuk, Iowa.
Split into simpler sentences: He moved to Keosauqua, Iowa in 1841, where he practiced law. He also owned a newspaper in Keosauqua and, in 1849, moved the newspaper to Keokuk, Iowa.