Part 2/10:
Though McDonald's is often credited with popularizing french fries in the fast-food scene, they were not the first to serve them. The acclaim for french fries in America can partly be traced to World War I, when soldiers developed a taste for them during their time in Europe. However, it wasn't until 1949, when the McDonald brothers, Ed and Maurice, opened their first restaurant in San Bernardino, California, that fries truly gained traction on the fast-food menu.