Answer:
When Austria-Hungary declared war on Serbia, it led to Russia declaring war on Austria-Hungary as well because Russia was in an alliance with Serbia.
Germany which had an alliance with Austria-Hungary via the Triple Alliance then declared war on Russia.
Russia was already in an alliance with Great Britain and France known as the Triple Entente and when Germany declared war on Russia, Great Britain and France declared war on Germany.
Thus began the Great War.
And they will come out of coordinate call advance and keep and we off balance but radio communications were the key
Basically saying you don’t realize you’re repeating history until it’s too late
I think that this is right 1 &2
I hope that this helps and is true sorry if it isn't:(