The Rhine
The Rhine River was Germany last major line of defense in the West.
Belgium entered the war when it was invaded by Germany, so its goal was its own self-preservation and defense.
Because Germany wanted to be more powerful than lots of countries so they invaded Poland to make a start. The British were allied with Poland so Britain decided to declare war on Germany. That only accounts for their battle during World War II. They were opponents in World War I because of Germany's attack on Belgium, with whom Britain had a defense pact.
The Elbe River
Germany invaded Belgium. Britain had a defense treaty with Belgium. After the invasion, Britain issued an ultimatum stating that if Germany didn't withdraw from Belgium, Britain would declare war. Germany didn't listen and Britain entered World War I.
Britain declared war on Germany on September 3, 1939. This declaration came shortly after Germany invaded Poland on September 1, 1939, prompting Britain and France to respond in defense of Poland. The formal declaration marked the beginning of Britain's involvement in World War II.
Because of international treaties of mutual self defense and because Germany and Japan invaded and attacked other countries.
Along its Eastern borders with Belgium and Germany. The war spread as far west as the Marne river, kilometers from Paris.
The English did not declare war on Germany, Great Britaindeclared war on Germany because Germany had invaded other European countries with which Great Britain had a mutual defense agreement.
No, the last war in Germany was World War 2
Germany, Italy and Japan signed a mutual defense treaty.
Germany was left banrupt after world war two