The need for new trade routes to the east, the desire to spread christianity, and competition between european countries all contributed to the:

beginning of European global exploration in the 15th and 16th centuries"

Explanation:

The need for new trade routes to the east, the desire to spread Christianity, and competition between European countries all contributed to the "beginning of European global exploration in the 15th and 16th centuries" since the primary goal of exploration was to extract resources and spread Christianity. 

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)