Complex sentence: He is best known for founding the commodities company Glencore and for being indicted in the United States on federal charges of tax evasion and illegally making oil deals with Iran during the Iran hostage crisis.
Split into simpler sentences: He is best known for founding the commodities company Glencore. He was indicted in the United States on federal charges of tax evasion and illegally making oil deals with Iran during the Iran hostage crisis.