Answer:
The International Encyclopedia of the First World War defines attrition warfare as “the sustained process of wearing down an opponent so as to force their physical collapse through continuous losses in personnel, equipment and supplies or [wearing] them down to such an extent that their will to fight collapses.”
Explanation:
don't forget to brainllest:)
The answer is definitely:
A. Migrated into England from Germanic regions of Europe (from 5th century onwards..)
I think it’s Nervous system
