America dropped atom bombs in Hiroshima on ___________.

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

Japan surrendered in the Second World War on ______________.

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

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

The year in which Second world war broke out 

The Battle of Berlin began in _________.

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

German air force attack on  Britain was known as _______________.

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