What term describes a ban or restriction on trade with another country?

The term used for a ban or restriction on trade with another country is called "Embargo".

Embargo refers to an official prohibition on exchange or other business action with a specific country.  

An embargo is a government arrange that limits business or trade with a predefined nation or the trading of particular merchandise. An embargo is normally made because of troublesome political or monetary conditions between countries. An embargo is intended to detach a nation and make challenges for its overseeing body, constraining it to follow up on the issue that prompted the embargo.

"Embargo"

Explanation:

"Embargo"

An embargo is a term used for government order that prohibits trade with or trading of various goods with a designated state. The embargo created due to unfavorable political or economic conditions between countries.

It is intended to weaken a country and establish difficulties for its governing body's , pressuring it to respond on the problem that led to a embargo.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.