What is the effect of trade barriers on the trade balance, the employment, and the economic growth?

• In essay, evaluate trade barriers !!
• Why do countries impose trade barriers?
• What is the effect of trade barriers on the trade balance, the employment, and the economic growth?
• Now choose a country (other than Saudi Arabia) and evaluate the arguments for and against erecting trade barriers in your chosen country. ((Chose from your side )).
• Choose evidence in support of your analysis for comparison (((((presented data in table and graphical illustrations and cite their sources.))))))
• Also One cite from uploaded course book. go to Chapter 5
• Define Non Tariff trade barriers.