Dwayne Andreas, the farmer’s son and college dropout who turned the grain-processing company Archer Daniels Midland into “the supermarket to the world,” then saw it rocked by a price-fixing scandal, has died. He was 98. Archer Daniels Midland spokeswoman Jackie Anderson confirmed the death. The company did not immediately provide other details. Under Mr. Andreas’s guidance, the company changed the agricultural world. He used his influence and friendships with politicians, including House Speaker Thomas P. “Tip” O’Neill (D-Mass.), Sen. Robert Dole (R-Kan.) and Soviet leader Mikhail Gorbachev, to encourage federal subsidies for corn and grain farmers, maintain huge overseas markets, and help turn ADM products such as high-fructose corn syrup into staples of the American diet.