The nationality problem that was expreinced in Austria-Hungary prior to World War 1 contributed to the war atmosphere by creating tensions between different groups and ethnicity, which gave more reason to fight.
this was the problem
This is a huge problem going global and 700 people have died
The Dust Bowl contribute to economic problem by how dangerous it is.
acid precipation
B. Zhuchkov has written: 'Lenin on the nationality problem'
a free-rider problem
hE invEnTed THe vEnn DiaGrAm ,,
Large amounts of carbon dioxide (CO2) entering the atmosphere appears to contribute to global warming. One way humans contribute to this problem is by burning fossil fuels.
At the settlement of the Congress of Vienna in 1815, the principle of nationalism was ignored. Germany and Italy were left as divided states, but strong nationalist movements and revolutions led to the unification of Italy in 1861 and that of Germany in 1871. Nationalism became a problem for Austria-Hungary, an area comprised of many conflicting national groups.
I don't know, I have problem too
We don't have the problems that you ask about, so we can't answer.
oil prices increased