Who become the prime minister of Britain during the course of war in 1940? 

The secret name of the Nazi plan to invade Soviet Union was ____________.

The Battle of Berlin began in _________.

The country which benefited most out of the I World War was __________.

Nelson Mandela was awarded the Nobel Prize for peace in __________.

Japan surrendered in the Second World War on ______________.

The reason for the braking out of Second World War. 

In 1991, _____________ came to an end and fifteen independent states appeared in its place.

What is name of the atom bomb used in Hiroshima?

On ____________ Japan bombarded the American naval base at Pearl Harbour.