There are several key demographic attributes of developed, developing, and third world countries. Developed countries have high levels of industrialization and urbanization, along with high per capita incomes dependent on secondary and tertiary sectors. However, they still face population problems like longevity, small workforces, rural populations, and urbanization. Developing countries have over three-fourths of the world's population and lower levels of technology, facing issues such as rapid population growth, unemployment, poor living standards, malnutrition, and slow industrial growth. Third world countries are those not aligned with capitalist or communist systems, though the term is less preferred now. Many have weaker resources and larger populations than others.