Poverty is defined as living on less than $1.25 per day. Poverty affects individuals and entire countries in both relative and absolute terms. Developed countries tend to have higher standards of living, education, health, and democracy while developing countries have lower living standards, education, health and infrastructure and economies based on agriculture. Africa is particularly affected by poverty, with 18 of the 20 poorest countries located there and around 50% of sub-Saharan Africans living on less than $1 per day. The United Nations aims to reduce poverty through programs like the Millennium Development Goals.