What were Hitler's foreign policy goals prior to WWII? It seems to me that Hitler had sought to invade Austria, Czechoslovakia and Poland (with future goals of conquering parts of Africa) in order to regain the territories that Germany lost due to the Treaty of Versailles. Moreover, was Hitler's justification for Anschluß along with the invasion of Czechoslovakia, parts of France and Poland due to German vengeance? I know that Hitler justified his invasion of bordering countries several times by saying that Austria/Czechoslovakia/Poland had committed atrocities against the Germany people in the past/present and that Germany was just protecting the Germans etc.

I know Germany has had some rough history with France and Poland, and that these countries had taken a slice of Germany after WWI. Was Hitler's invasion of these countries caused by his desire to avenge the Germans due to the 'atrocities' caused by those countries due to past conflicts? Thanks.