Answer:The 14th amendment was a amendment that allowed people mainly blacks to have equal protection under the laws *which really didnt really work cus of 1960s segregation yunno that stuff*
Explanation:Hope this was what you where looking for
A Trade barrier are laws that limits free trades between countries or nations, An Embargo are type of laws that specifically cuts off trades, it may be import or export into specific countries. Either of these answers fit your question.
John Kay was the inventor! :)
Hiope I helped!