Misc: what country did italy annex in 1939?

Questions

The ore pitchblende is the major source of which element?

What is the original meaning of the word Shambles?

The polar explorer Sir Ranulph Fiennes has a triple barrelled surname. Give either of the other parts of his surname.?

In which country do the Khmer people live?

Which temperature scale begins at minus 273.15 degrees Celsius?