The purpose of the Berlin Conference of 1884-1885 was to put some order in the chaos of the colonization of Africa. It divided the continent up into specific areas for colonization.
Answer:
Isolationism was stronger after the depression
Explanation:
After WWI, USA became more active economically and military in aid for Europe's countries in post-war recovery. This meant that many European countries depended on US loans to recover. After the crash in 1929, USA became more conscious about their own economy and stopped participating in European conflicts. This encouraged countries such as Germany or Japan to take action in order to expand territory, which gave place to the raise of fascism in these countries (Japan's INnvasion of China in 1937 and Germany's annexation of Czechoslovakia in 1938, for example)
I believe they were both harmed by nuclear radiation. Hiroshima was when the USA bombed Japan with a nuclear bomb. Chernobyl is the disaster in which a reactor caught fire and caused the harmful radiation to spread. I hope that was helpful. :)