| http://www.w3.org/ns/prov#value | - Vivid historical examples include the ill-fated 1874???1877 Henry Morton Stanley trans-African expedition, during which two-thirds of the participants died of malaria, sleeping sickness, and other conditions, and the French attempt to construct the Panama Canal in the 1880s, an endeavor that was aborted because of heavy human losses from malaria and yellow fever.2Even in the 21st century, western
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