The correct options are
A Economic depression and inflation
B Poverty and unemployment
D Decolonisation and conflicts against governments
The interwar period was scarred by economic depression, poverty, unemployment, decolonisation, and conflicts against governments. New ideas of Fascism and Nazism terrorised Italy and Germany. Meanwhile, several colonies across the globe raised the demand for freedom in this period.
The United Nations, however, was established after the Second World War.