What role did slavery in the 13 American Colonies have in contributing to the structure of British mercantilism

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

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)