The statement ‘Processing information while learning something new can
occur without demonstration of behavior’ is true. Learning information can be
verbally (through speaking), visually (through diagrams , pictures, etc.) or by
hearing.
If you're referring to the militarization and aggression of Germany, there's a lot of debate as to why these nations didn't intervene earlier. The general consensus is that nobody believed Germany would take it as far as they did.
