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What did Alexios komnenos do?
Alexius I Comnenus, also spelled Alexios I Komnenos, (born 1057, Constantinople, Byzantine Empire [now Istanbul, Turkey]—died August 15, 1118), Byzantine emperor (1081–1118) at the time of the First Crusade who founded the Comnenian dynasty and partially restored the strength of the empire after its defeats.
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They were inexpensive and readily available to large numbers of people
Answer: Coal was needed in vast quantities for the Industrial Revolution. ... However, as the country started to industrialise itself, more and more coal was needed to fuel steam engines and furnaces. The development of factories by Arkwright and the improvement of the steam engine by Watt further increased demand for coal.
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