'internally-produced' originates from the combination of 'internal' and 'produce'. 'Internal' comes from Latin 'internus', meaning 'inward' or 'inside', and 'produce' comes from Latin 'producere', meaning 'to bring forth'.

'Internally-produced' evolved from the combination of 'internal' and 'produce', which were used separately in Middle English and later combined in modern English.

Initially, 'internal' meant 'inside' and 'produce' meant 'to bring forth'. The combination now refers to something produced within a specific entity.