They were allies with Germany.
No. The Soviet Union did enter World War 2 but on the other side. Germany invaded and then forced the Soviet Union into the war
Great Britain entered World War 2 in 1939 after Germany invaded Poland.
England entered the war when Germany invaded Poland in 1939.
It was invaded by Germany on May 10, 1940.
Great Britain declared war on Germany in September 1939 after Germany invaded Poland.
Britain and France declared war on Germany on 3 September 1939
Austria was effectivly part of Germany in WW2. therefore 1939.
Jamaica was immediately involved in World War II after Britain declared war on Germany in September 1939. They were a British colony.
They entered because they wanted to EDIT: Czechoslovakia never entered World War II. It was annexed by Germany before the war began.
Because Germany wanted oil from the region and The English were in control in that area.
When Germany invaded Poland in 1939, France and Britain, who had promised aid to Poland if Germany invaded, entered the war on the Allied side, thus starting the Second World War.