The Franco-Prussian War (1870) was a conflict between the Second French Empire and Third French Republic, and the states of North German Confederation led by the Kingdom of Prussia. It resulted in a German victory and it was a key part of the wars of Unification of Germany made specifically to building an integrated nation state from the former Empire. This ultimately set the precedents for Nazi Germany and World War II.
The second one, women never had the right to vote until the late 1900s.
Britain became the strongest power