some were revolutionary were u didn't have cars u had to walk by foot, horse, by boat to have transportation it wasn't easy n they had to do it for miles n miles now we look back as how transportation was even invented but it was now we have millions of ways of transportation ways doesn't matter from planes to technology, etc.
could be wrong but i believe the answer is the theories of Social Darwinism were often used to justify the efforts of certain political, social, or economic views.
I think its because of power or it commands more of respect or it was for decoration for the helmet. i hope this helps you.
Answer: its c
Explanation: im 99.9% sure