Complex sentence: Later, the brothers started franchising the entire concept, with restaurants built to a standard design, created by Fontana, California architect Stanley Clark Meston, and featuring Richard's suggestion of the Golden Arches.
Split into simpler sentences: Later, the brothers started franchising the entire concept. Franchised McDonald's restaurants were built to a standard design, created by Fontana, California architect Stanley Clark Meston and featuring Richard's suggestion of the Golden Arches.