Select all that apply.

The Columbian Exchange involved the widespread exchange of .

pathogens
people
animal skins
plants
gold and silver

The correct answer is : It involved the widespread exchange of: animals, plants, technology, culture, new types of food, human populations, ideas and diseases that would take place between the Americas, West Africa and the Old World.

Explanation:

During the Colombian exchange, Africa was impacted by: labor was needed, the slave trade created conflict and exploded, almost ten million people were taken. And in Europe, the Colombian exchange caused the following impact: commercial markets grew, expansion and conflict abroad, largest common tray migration.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.