Germany invaded Poland.
Germany took over the country
All Jews were ordered to officially to register themselves
The Germans stepped their Arynazation of Jewish businesses, the process whereby Jews were forced to sell their businesses to non-Jews. In some cases some Jews managed to transfer their businesses into the hands of sympathetic Dutchmen.
Opening of 4-day air attack on Japanese convoy off New Guinea
On the fifth day the Germans bombed the city of Rotterdam, causing an appalling loss of life and property.
During spring 1941 new anti-Jewish decrees continued to be issued. Some of the decrees would be petty, others would pose enormous hardship,
The Lend-Lease bill is introduced in the U.S. Congress.
Heavy German attacks by dive-bombers on British convoys to Malta (in Sicilian channel) results in loss of 'Southampton' and damage to 'Illustrious'.