Respuesta :
It would be "blitzkrieg" that was first used in Poland to this effect, since it was meant to "shock the enemy, and England and France agreed to the "Munich Agreement" in order to avoid war and allow the annexation of the Sudetenland.
Blitzkrieg was a German military strategy of "lightning war" was first used in Poland.
England and France agreed to The Munich Agreement in order to avoid war and allow the annexation of the Sudetenland
England and France agreed to The Munich Agreement in order to avoid war and allow the annexation of the Sudetenland