Remember that cooperation and alliances are two different things.
Building a navy? No never.
Germany and Austria-Hungary
France, Britain, and Russia
Assassination of Franz Ferdinand
YOU JUST SAVED MY LIFE
Oh no wrong turn!!!
In order to have lasting cooperation within the European region, it was necessary that Russia and Austria-Hungary got long. Decades earlier, Germany isolated itself from imperialism decades earlier because it wanted to make an empire of its own.
Fight broke lose between all countries. Austria-Hungary, and Germany were against France, Britain, and Russia
The Road to WWI
We are here for you
Oh, an alliance yes! Alliances, yes!
Germany calm down
While on a trip in Bosnia, Ferdinand and Sophia, his wife, had avoided one assassination attempt.
Germany we believe differently deal with it. France we will protect you
Avoiding this attempt, their driver had gotten them lost. only for this wrong turn to lead to the actual assassination of Ferdinand.
A Serbian terrorist committed horrible crime against Austria-Hungary. Austria-Hungary wanted revenge for the attack, and blamed Serbia as a whole for the act. Germany supported the revenge that was about to happen, while Russia did not but stood by Germany for its decision.
How could you let one of your people do this? You will pay!
It's not our fault, it's only one person.
Germany was offended by the fact Russia was not in full support of their decision. So Germany declared war against Russia, but instead of attacking Russia directly they went after the weaker ally France, by using Belgium. Britain got angry, and entered the war against Germany.