9 Sep 1855Allies captureSevastopol
Mar 1856Crimean War ends
Oct 1856–Oct 1860Second Opium War:Anglo-French Expeditionagainst China
?? 1857–?? 1860Fraser CanyonGold Rush
28 May 1858Treaty of Aigun:China cedes Amur to Russia;Primorye to be under joint admin.
Aug 1858Colony of BritishColumbia formed
Jun–Oct 1859Pig War/San Juan Is. dispute
Aug 1859North-Western Terr.assigned toHudson’s Bay Co.