The Short Version
Britain's trajectory toward global industrial leadership did originate in the mid-18th century, consistent with the claim's use of "from" as a starting point. Multiple high-authority academic sources confirm that breakthrough technologies in steam, cotton, and iron emerged around 1750–1780, giving Britain a decisive early advantage. However, full measurable dominance — such as producing two-thirds of world coal and half of global cotton and iron output — was only consolidated by the early-to-mid 19th century, making the claim's timeline slightly imprecise but broadly accurate.