History of Greece
Neither of those two words exactly fits the events, as they imply an incursion from outside a society to within; but the Dorians were not outside of either Greece or Greek society. William Mitford's "History of Greece" (1784–1810) described a "Dorian conquest" followed by "a revolution in Peloponnesus so complete that, except in the rugged province of Arcadia, nothing remained unaltered."