Answer:
D. Political
Step-by-step explanation:
Political barriers are those barriers resulting from political changes in a country. They are those obstacles or restrictions that prevents a firm or a business from establishing subsidiaries or start ups in locations having it. Political barriers may come in many form. It may be as a result of changes in government, instability in the power of Government, protest and wars too like in the example cited in the question and so on. These activities serves as a barrier for business and organization looking to establish operations in that country.