There are 3 causes for the spice trade.
The Europeans have gained spices through the trade with Muslim traders. They formed a monopoly.
Only grew on a few islands in the South Pacific-East Indies That meant that a lot of people had to travel in order to find the spice routes.
The spices were used for seasoning meat also in perfumes and in medicine
The Effects of the spice trade
The reason this one is big changes is because they have only one sellers so they will buy whatever for whatever amount.
This was a big cause because everyone usually would travel there to get spice and then would start a big conflict between everyone who could afford spices.
The effect is that people need the spice so they can use it for medicine or seasoning.
The effects of Christopher Columbus changing the world
Spain agrees to finance Columbus's voyage.
Columbus continues to explore the Caribbean. That made him believe his is in the East Indies and he started to call the natives Indians.
Someone took over his exploration that is why they call the states America not Columbia
Notes on the Spanish Armada, Christopher Columbus, and Spices are found in my notebook.