Complex sentence: James Beauchamp Clark best known as Champ Clark (March 7,1850--March 2,1921) was a prominent American politician in the Democratic Party from the 1890s until his death, and was an unsuccessful candidate for the Democratic nomination for President in 1912.
Split into simpler sentences: James Beauchamp Clark best known as Champ Clark (March 7,1850--March 2,1921) was a prominent American politician in the Democratic Party from the 1890s until his death. He was an unsuccessful candidate for the Democratic nomination for President in 1912.