How did conflict in serbia between austria-hungary and russia ignite world war i? european countries united in an effort to ensure economic stability on the continent. europe split into allied and central powers to keep the conflict from hurting its interests in america. europe split into allied and central powers as countries honored alliances to fight together if attacked. european countries united in a european union to keep russia out of the ottoman empire.

Europe split into Allied and Central powers as countries honored alliances to fight together if attacked.

In the first years of the 1900, power balance between the nation was carefully measured with alliance and influence, so it was only a matter of time that something would ignite this tableau, as the alliance system was a perfect instrument for calling every nation to help the other, thus putting all the europe in state of war almost overnight.

tbh idk same thing here

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.