Victory in Battle
Jun 4 Second Italian War of Independence: Battle of Magenta, results in a French-Sardinian victory under Napoleon III over the Austrians under Marshal Ferencz Gyulai
- Jun 6 Australia: Queensland is established as a separate colony from New South Wales (Queensland Day).
- Jun 12 Comstock Silver Lode in Nevada discovered, first major silver discovery in the US
- Jun 15 Pig War: Ambiguity in the Oregon Treaty leads to the "Northwestern Boundary Dispute" between U.S. and British/Canadian settlers
Victory in Battle
Jun 24 Battle of Solferino, Northern Italy: a French Army under Napoleon III and a Sardinian Army under Victor Emmanuel II overcomes the Austrian Army under Emperor Franz Joseph I
