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The UK had multiple incompatible measures with the same name. The 'imperial' measures were the result of a standardisation of these measures. The US gallon is
by joshuaissac 4y ago
The UK had multiple incompatible measures with the same name. The 'imperial' measures were the result of a standardisation of these measures.
The US gallon is the same as the now-defunct English 'wine gallon'. The US mile was similarly the same as the UK statute mile, until it was indirectly redefined in terms of the metric metre in 1893. So at least the two examples given are not homegrown.