Answer:
are still used by nations as a means of rewarding their friends and punishing their enemies
Step-by-step explanation:
Trade barriers "are still used by nations as a means of rewarding their friends and punishing their enemies."
The above statement is based on the fact that trade barriers have been analyzed to be damaging and reduce the total economic advantage of the affected countries.
For example, the imposition of taxes on food imports and subsidies for farmers in advanced countries leads to overproduction and eventually dumping on world markets, thereby reducing the prices and affecting the developing countries' farmers.