1. Economic - many children mean more workers in the field.
2. Social - No birth control or family planning. Families hope that more children will survive childhood and support the parents in old age. Children are a sign of virility in some cultures.
3. Political - Muslim and Catholic Governments encourage large families and do not provide much education about family planning.
During stage 2 the birth rate remains high but the death rate starts to fall to about 20 per 1000 people. By the end of this stage, both rates are very different. This gives a high natural increase and a rapid growth in population live. </li></ul>
<ul><li>Stage 3 - The birth rate starts to fall </li></ul><ul><li>The death rate slowly fall to about 15 per1000, but the most important change is in the birth rate which decreases to about 20 per 1000 population. The natural increase is still high but the population growth begins to slow down. The birth rate begins to fall due to:
<ul><li>Stage 4 - Birth and Death rates are both low </li></ul><ul>In stage 4 both rates are low, although with some slight fluctuations each year. This gives a very low natural increase or a steady population. Many countries of Europe, the USA and Japan, are at stage 4 today. <li>If all the world was at stage 4 then zero population growth would be much closer as many people fear (teme). They are worried about how fast the Earth's resources are being used up, the levels of pollution and how to feed, cloth and house the ever-growing population. </li></ul>