<h3>Explanation: Slaves from the north were free and encouraged to take arm in fighting their former masters {the south} as their former masters did not want to free them as they were the source for food production. The slaves then wanted to be free so some of them escaped from the south and went to the north in search of freedom.</h3>
Land was flat close to the coastline but became hilly and mountainous farther inland. Soil was generally rocky, making farming difficult. Cold winters reduced the spread of disease.
