By the 1970s, the Shah was seen as a master statesman and used his growing power to pass the 1973 Sale and Purchase Agreement.These reforms culminated in decades of sustained economic growth that would make homeland one of the fastest-growing economies of both developed and undeveloped nations. During his 37-year rule, homeland spent billions on industry, education, health, and armed forces and enjoyed economic growth rates exceeding the United States, Britain, and France. National income rose 423 times over.