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Another key achievement of the Khmer Empire was its ability to build strong trade links with societies across South-East Asia. Trade in rice and fish became a key part of the Khmer Empire's economy. Use of the Mekong River allowed the Khmer to trade in regions both north and south of the empire.
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Scientific management is a management theory that analyzes work flows to improve economic efficiency, especially labor productivity. This management theory, developed by Frederick Winslow Taylor, was popular in the 1880s and 1890s in U.S. manufacturing industries.
St. Francis of Assisi abandoned a life of luxury for a life devoted to Christianity after reportedly hearing the voice of God, who commanded him to rebuild the Christian church and live in poverty. He is the patron saint for ecologists.
The successes of the Scientific Revolution gave people the confidence that human reason could solve social problems. During the Enlightenment, people began to question openly their religious beliefs and the teachings of the church.
