The three growths, 1. growth of population, 2. growth of exploration and 3. growth of Scientific discoveries f

The three growths, 1. Growth of Population, 2. Growth of Exploration, and 3. Growth of Scientific discoveries in 15th to 19th centuries changed completely the face of the earth leading to two great wars.
1. Growth of Population ;

In the middle of 1800s world's population was estimated to be 1,000 million by mid 1920s , less than a century later, the population, the population had doubled. Considering all the relevant factors United Nations forecast that by A.D. 2000 the figure will have increased to over 6,000 millions and that it may reach 7,000 millions, as shown in the central  figure.    

The phenomenal expansion is shown on the chart in the center of these pages.

Movement of Population

The movement of population occur mainly for political, religious and economic reasons.The more important migrations of the past three hundred years;

1. Europeans to USA, 2. Europeans to Canada, 3. Europeans to South America, 4. Europeans to Australia and New Zealand, 5. Europeans to Central and East Africa, 6. Internal migration to Europe,

7. Dutch in South Africa; 8. Chinese in other parts of Asia, 9. Indians in Malay and Africa, 10. West Indians to Great Britain,