they may had felt happy and between sad at the same time
Is your question: what improved the lives of the Russian serfs?
it was the Emancipation Reform of 1861 in Russia, which effectively abolished serfdom in Russia (serfs could not own land so they had to work for someone).
They performed domestic duties such as cooking and cleaning.
In struggle times, the leaders of African liberation spoke passionately about women's equality and recognized their contributions
The treaty of Versailles was a peace breaker (apparently), therefore, ending World War I. It brought Germany to great suffering; "...starving the children..." - I don't remember who that was by, but its important quote to know. That's only the partial speech, search up the speech and hopefully, you'll find it, otherwise ask your History teacher.
Nine nations created by the Treaty: Poland, Estonia, Finland, Czechoslovakia, Hungary, Yogoslavakia, Latvia, Estonia, and Austria.
Germany was deprived of 12.5 percent of population, 10 percent of the land, all of its colonies, 16 percent of its natural resources (steel, gold etc)...War Guilt Clause 231... These are some important notes to take. However, the allies did not cut off their oil supply, this, in turn, helped Germany perp for WWII.
If you're writing about Hitler's Rise to Power, you could also include the Policy of Appeasement, and ofc the Treaty of Versailles.
I hope this helped :)