Economic, political and social.
Instability was from the Treaty of Versailles left many countries bitter for they did not get fully compensated for the war. Germany, especially, experienced economic and political issues bc they had to be a republic and pay billions in reparations. Russia was faced with a revolution and struggled with famine and inflation. Europe was faced with even more instability after the stock market crash of 1930.
Hunted for silver and gold
searched for the fabled Northwest Passage
Hope this helps! :)
feudalism: system of rule by local lords with ties of loyalty to a king.
Feudalism in Western Europe was similar to feudalism in Japan in that: power was based on class relationships.
Hope this helps.