The Congress of Vienna settlement, despite later changes, formed the framework for European international politics until the outbreak of the First World War in 1914.
In February 1815, the Congress condemned the slave trade as inconsistent with civilization and human rights.
Restored monarchies across Europe
Ignored demands for greater democracy and nationalism; this led to the majority of conflicts in the Nineteenth Century, between and within countries( thus ignited Liberal National Revolutions of 1848 Across Europe)
The first worked war spell the doom of old empires( Ottoman , astro hungarian empire) and paved way for emergence of many nation states form the empire. Russsia in the form of USSR could still hold many nationalities in in its fold . Yugoslavia is an exaple for a emergence of new state,
After the second world warie after 1945 war many nations in Africa Asia got independence thus le to the in thglobe