Germany .
Poland .
The first country was Poland. On 1 September 1939, German forces invaded Poland so on 3 September 1939, Britain and France declared war on Germany.
september 1939
They invaded Poland.
Nothing....they did invade Poland in 1939.
The Soviet Union invaded Russia on September 17, 1939. The Soviet Union invaded the country 17 days after Germany did.
Germany invaded Poland on September first 1939
Nazi Germany invaded Poland on September 1, 1939.
Poland, in late August 1939.
Germany didn't invade until 1939 when they went into Poland.
None. Germany attacked Poland on September 1 1939.