No. There were no definite boundaries, as we know them today, between tribes or nations.
Poland first, (although they sneakily took over austria and annexed Czechoslavakia prior to this), followed by invading Norway, then after a few months they attacked the low countries of Holland and Denmark before breaking Belgian neutrality to attack France.
amorites
Blitzkreig. Schhlieffen plan.
"Planet 51" (2009). Animated.
novanets They served as natural barriers to invading forces
The Germanic tribes began encroaching and invading the Roman empire because they, in turn, were being pushed out of their traditional lands by the invading Huns from Mongolia.
3423
The Nazis would travel by plane or boat when they invaded countries
Russia. Battle of Stalingrad
Resources and "slave" laborers.
They promised they would stop invading countries in Europe.
France and England
because Hitler began invading European countries.
The king's invading armies were huge oppressors in the captured countries.
Allied military forces invading German held France.
Hitler started the war by invading the countries and declaring war on others.
Invading other countries + Breaking treaties