'manually' originates from Latin, specifically the word 'manuālis,' where 'manus' meant 'hand.' 'Control' originates from French, specifically the word 'contreroller,' where 'contre' meant 'against' and 'roller' meant 'to roll.'

'manuālis' transformed into the Old French word 'manuel,' and eventually became the modern English word 'manual.' 'Contreroller' transformed into the Middle English word 'countroller,' and eventually became the modern English word 'control.'

Initially, 'manual' meant 'of the hand,' and 'control' meant 'to check or verify.' Over time, 'manually-controlled' evolved to mean 'operated by hand.'