Having a good family value will greatly increase the chance of getting an education. When you have deucation you will have the skill to perform the task. Things such as culture and religion can also
Having a skill willl greatly increase a chance of employment and therefore contribute to income level. Opportunity and training will also play sinificant role.
State of the economy also plays significat role in determining unemploymnet rate and therefore greatly affect people's abilyt to find job and income.