What made Germany’s invasion of Europe difficult to stop during World War II

Explanation:

The fast moving ground troops commanded by the military genius of Adolf Hitler made it very difficult for neighbouring countries of Europe. Germany invaded Poland which marked the beginning of world war II. The Germans were dedicated soldiers armed with the most modern arms and ammunition.

answer: 25.8 years old or 25 years old

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.