Man's conflicts with his environment are his conflicts.
spiritual
social
natural
historical

social

Explanation:

Man is called to be a social animal. Humans are bound to be live collectively and share many things directly or indirectly. Every action of an individual affects the other. Even the word social derives its meaning from the Latin word "socii" means allies. His conflict with his environment is thus called to be social conflict.

it provided for selection of government employees through competitive examinations. it also made it unlawful to fire or demote covered employees for political reasons or to require them to give political service or payment, and it set up a civil service commission to enforce the law.

explanation:

they were byzantines