Russia and Germany, but England had the most warships
Russia, Poland, Germany.
Germany in the triple alliance with Austria Hungary against Britain, Russia and France
Germany felt threatened by France and Russia because they could just attack and Russia was friends with Serbia
Mainly France (Slighty slightly slightly) russia
Germany had an agreement to go to war if Austria-Hungary were to be attacked by Russia. Alliances like this were a main cause that brought many countries into WW1.
Russia declaring war on Germany to protect its ally Serbia.
The Bolshevik Revolution changed Russian objectives. //NovaNet
It was not necessarily all Germany's fault that World War 1 started. It was collectively the fault of Germany, Russia, and Serbia for being unreasonable when dealing with each other.
During WWI the Czar of Russia was Nicolas Romanov II. He was the cousin of Kaiser Wilhelm II of Germany; this lead to unrest between Russia and Germany as the war progressed.
On July 31 Germany sent a 24-hour ultimatum requiring Russia to halt its mobilization and an 18-hour ultimatum requiring France to promise neutrality in the event of war between Russia and Germany.
Vladimir I. Lenin was transported from Switzerland to Russia in order to put him in a position to stir up unrest and opposition to the war or even to create a revolution to change the government that would end Russia's hostilities with Germany in World War I.