In the middle latitudes, the mountains, especially the higher ones, experience lots of snow and ice during few months of the year. The ice is well known for its weathering abilities, and this is because it expands, so it creates a lot of pressure on the body in which the ice is, thus breaks it over time, and contributing to the weathering process in a mechanical manner.
<span>The gold and salt trade lost a lot of business to the slave trade.
Borders were created that split ethnic groups.
Villages lost many skilled members of the community. </span>
