Since the flesh is absolutely unable to seek God or submit to Him, mammon manipulates it by seducing it with the lust of the eyes, lust of the flesh and pride of life (1 John 2:16) as satan did to Jesus to tempt Him into worshipping him. Satan told Jesus he would give him bread, protection from death, and all the kingdoms of the world (Matthew 4). The bread is promised to appeal the lust of the flesh, the protection from death appeals to lust of the eyes and the kingdoms of the world is to appeal to the pride of life.
Mammon seeks cause conflict and hatred between people out of envy and jealousy. Envy and jealousy make people feel wronged by others because of what they have or do not have. People feel as though they are treated unjustly and unfairly by what they do or do not have because of envy and jealousy. Envy is anger directed towards another for what they have. Jealousy is directed toward the self for what one has compared to what others do not have. People can be envious or jealous about all kinds of things - money, romance, family, education, health, security, popularity or anything else that is of this world.
Since the carnal flesh can only seek that which is of this world, mammon uses the things of this world to puff up their pride which is the root of envy and jealousy. When one is full of envy or jealousy, one hates others, either because of what they have or do not have. Ye lust, and have not: ye kill, and desire to have, and cannot obtain: ye fight and war, yet ye have not, because ye ask not (James 4:2).