'historically-connected' originates from the combination of 'historically' and 'connected', where 'historically' is derived from 'history', meaning 'a record of past events', and 'connected' from Latin 'connectere', meaning 'to bind together'.

'historically' evolved from the Old French 'historie', and 'connected' from the Latin 'connectere', eventually forming the modern English term 'historically-connected'.

Initially, it meant 'linked by history', and this meaning has largely remained the same in modern usage.