Why could only the poor hold certain less prestigious jobs in roman and athenian democracy?

where's the

a slave could own nothing, he can't have a wife, children, or a home. they cant possess nothing and acquire nothing. hope this

cause : british fleet attacks to resupply their troops the battle of yorktown malaria broke out among armies

description general george washington, commanding a force   french and continental troops,   battle of yorktown against british general lord charles

with the winner being george washington.