1 7 6 0 , ▁the ▁western ▁Pays ▁d ' en ▁Haut ▁( including ▁most ▁of ▁southern ▁Ontario ) ▁remained ▁apart ▁of ▁the ▁British ▁province ▁of ▁Quebec . ▁ ▁Following ▁the ▁American ▁Revolution ary ▁War , ▁some ▁ 4 6 , 0 0 0 ▁American ▁sett lers ▁loyal ▁to ▁the ▁Crown , ▁known ▁as ▁the ▁United ▁Empire ▁Lo yal ists , ▁fled ▁north ▁to ▁Quebec , ▁and ▁other ▁British ▁colon ies . ▁The ▁King - in - C oun cil ▁granted ▁each ▁family ▁ ▁of ▁land . ▁ ▁In ▁addition ▁to ▁the ▁Lo yal ists , ▁thousands ▁of ▁I ro qu ois ▁and ▁other ▁Ab original s ▁were ▁exp elled ▁from ▁New ▁York ▁and ▁other ▁states , ▁res ett ling ▁under ▁the ▁protection ▁of ▁the ▁Crown ▁in ▁what ▁is ▁now ▁Ontario . ▁A ▁few ▁dozen ▁Black ▁Lo yal ists ▁also ▁settled ▁in ▁Ontario , ▁although ▁the ▁majority ▁of ▁Black ▁Lo yal ists ▁settled ▁in ▁Nova ▁Scot ia . ▁The ▁majority ▁of ▁black ▁habitants ▁of ▁Ontario ▁were ▁slaves ▁brought ▁into ▁the ▁col ony ▁the ▁American ▁loyal ists . ▁ ▁As ▁a ▁result ▁of ▁this ▁population ▁infl ux ▁in ▁the ▁after math ▁of ▁the ▁Revolution ary ▁War , ▁the ▁western ▁port ions ▁of ▁Quebec ▁was ▁sever ed , ▁forming ▁the ▁new ▁province ▁of ▁Upper ▁Canada ▁in ▁ 1 7 9 1 . ▁Upper ▁Canada ▁was ▁reun ited ▁with ▁its ▁eastern ▁portion ▁( Lower ▁Canada ) ▁to ▁create ▁the ▁Province ▁of ▁Canada , ▁with ▁the ▁en act ment ▁of ▁the ▁Act ▁of ▁Union ▁ 1 8