Poland first, then every other European country except for UK, Ireland, Sweden, Switzerland and Portugal.
Germany invaded France and Poland also it invaded Austria. World War 2 started because Germany said to England they wouldn't invade Poland but they did - so Poland is the easiest country to remember that was invaded!
Austria.
It was easy for Germany to invade Poland (1) Because it is a nearby country and (2) because Poland is flatland. Tough terrain such as mountains are a major setback and have cost many military groups all over the world great loses.
World War 1 Germany invaded Russia in 1917 after Russia backed out of the war. World War 2 Germany invaded Russia during the Second World War on June 22, 1941 Operation Barbarossa
Technically Poland.
Germany.
Poland
Poland
Poland
Poland.
italy
Czechoslovakia
who was the first country to invade in world war 2
No
if you mean which country it was Poland
Poland
Poland