Answer:
They needed new materials.European countries colonized most of Africa. In order to protect their colonies, the European nations began to build large navies and armies. *Hope I helped*
Explanation:
Climatology is the branch of scientists
The caste system regulated many aspects of live, such as what jobs one would have, whom one could marry and the position in the society.
These were taken to be almost impossible to change and they made the society less flexible, with less changes. People didn't see much change nor did they expect many changes, and this stability gave a sense of order.
The answer is 10 year-old. After a divorce, 10 year old child will fell pressured to choose between the mother and the father. The child may also experience a degree of divided loyalty, since a 10-year old is close to puberty and individuals who experience puberty have mental coping or mental changes, so as a 10 year old child, it would be hard for him/her to decide.