What was used to guide the flow of the canal water over rivers? a) stone aqueducts b) bridges c) tunnels d) irrigation systems

Many types of cultures use these but my real answer is d) irrigation systems. Hope it helps

hi,

john hunter was a scottish surgeon, he was a early advocate of careful observation and scientific method in medicine,

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answer: born in saint-dié, in the vosges department, france, he studied law, and was called to the bar at paris in 1854,[2] but soon went into politics, contributing to various newspapers, particularly to le temps. he attacked the second french empire with great violence, directing his opposition especially against baron haussmann, prefect of the seine department. a series of his articles in le temps was later republished as the fantastic tales of haussmannlaxupa (1868).[2]

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