1. An ancient network or trade routes. 2. Silk, spices, sugar, teas, cotton, etc were traded. 3. Europeans wanted to find riches, claim new land for their country, and increase trade. 4. Caravels were small fast sailing ship used from the 15-17 centuries. 5. They were used to make astronomical measurements. 6. They sailed around the continent of Africa.
Positive effects of war can include the defeat of problematic governments, the correction of injustices, advances in technology and medicine, and a reduction of unemployment.