poland
Well Italy declared war on n Briton and France because the French and British declared war on Germany and Italy was a key strong ally to Nazi Germany
Poland
The British declared war on Germany during World War I because Germany violated Belgian neutrality by invading Belgium in August 1914, which was seen as a threat to British interests and potential aggression towards Britain. In World War II, the British declared war on Germany after Germany invaded Poland in September 1939, triggering Britain's declaration of war to honor their commitment to defend Poland's sovereignty.
Belgium .
italy
Poland.
The 1939 invasion of Poland caused Britain to declare war on Germany, which started WWII.
Czechoslovakia
It was Technically Germany by Stepping into Poland and breaking the appeasement with France and England.
if you mean which country it was Poland
1939