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empire – n. a group of territories or peoples under one ruler
source – n. the beginning of a stream of water : someone or something that provides what is wanted or needed
sin – n. an offense against religious or moral law
leather – n. animal skin dressed for use
hydroelectric – adj. of or relating to production of electricity by waterpower
plain – n. a large area of flat land without trees
cremate – v. to burn the body of a person who has died
cycle – n. a set of events or actions that happen again and again in the same order : a repeating series of events or actions
tributary – n. a stream feeding a larger stream or a lake
devastation – n. great damage or destruction
