Extra points what was the occasion in which "blood, toil, tears, and sweat by winston churchill, was written?

On May 10, 1940, Winston Churchill became Prime Minister. When he met his Cabinet on May 13 he told them that “I have nothing to offer but blood, toil, tears and sweat.” He repeated that phrase later in the day when he asked the House of Commons for a vote of confidence in his new all-party government.

The basically got killed by the environment and white people