Poland.
Czechoslovakia
italy
To response to Germany invasion of Belgium.
Germany didn't declare war in 1915 against anyone, it was actually Britain that declared war on Germany
Britain was the first to declare war on Germany and New Zealand and the rest of the commonwealth felt like they wanted to help britain defeat germany
1939
He didn't. Britain declared war with Germany.
Germany attacked a Poland A British ally.
To response to Germany invasion of Belgium.
France and Britain declared war onto Nazi Germany on September 1st 1939. This was the official date of the starting of World War 2.
Because Germany invaded Poland.