Complex sentence: Amassing political power and wealth, he was considered to have been one of the most successful national Klan leaders, and had close relationships with numerous Indiana politicians, including Governor Edward Jackson, a Klan member elected to office in 1924.
Split into simpler sentences: Amassing political power and wealth, he was considered to have been one of the most successful national Klan leaders. He had close relationships with numerous Indiana politicians, including Governor Edward Jackson, a Klan member elected to office in 1924.