Describe the main features of the allience systems that existed in europe 1914

The alliance system in Europe basically was if one country went to war, all of the other countries in that alliance would back up their buddy and go to war as well. This is what happened when Archduke Franz Ferdinand was assassinated and Austria-Hungary was arguing with Bosnia and each of their alliances go pulled in with them too.

It was an alliance between Britain, France and Russia.'
'It arose from the Franco-Russian Alliance in 1894 and the Entente Cordiale between Britain
and France in 1904.'
'With the signing of the Anglo-Russian Entente in 1907, the Triple Entente was complete.'
'It was a DEFENSIVE alliance.'
'It was a powerful counterweight to the Triple Alliance.'
'It was one half of the alliance system which ignited the First World War.'
'It further brought Britain out of 'isolationism'.'
'It was originally a friendly agreement to settle colonial disputes.'

Choices? multiple choice