Old rivals, Britain and France, formed an
alliance during World War I because they
were afraid that Germany would invade
and dominate Europe.
In those times full of conflicts in Europe, the French and Russians had already signed an alliance called Franco-Russian Alliance. Great Britain had to do the same in 1904 because the threat of Germany over Europe was real. It was called the Anglo-French Entente Cordiale and was a treaty of mutual cooperation.
When British and Russians signed a treaty in 1907, the Triple Entente was formed and this Alliance fought the
Triple Alliance of Germany, Italy, and
Austria-Hungary in World War. France had had a military alliance with Russia since 1894, designed primarily to neutralize the German threat to both countries. Germany had a military alliance with Austria-Hungary.
To know more about Alliance visit:
https://brainly.com/question/6574203
#SPJ4