Share This Article 1. In April 1922 Germany and this country signed a treaty of trade and friendship. Italy Soviet Union Sweden Austria 2. The largest grand artillery battery ever formed on the North American continent was at this battle. The Battle of Vicksburg The Battle of Cold Harbor The Battle of Gettysburg The Siege of Petersburg 3. In 1886 France became the first to experiment with these for military use. Bicycles Automobiles Submarines Motorcycles Loading …