Answer:
Vietnam
Explanation:
Vietnam has a close proximity with China which was where the pandemic originated from. Vietnam took proactive measures such as ban on flights into the Country and putting the country on total lockdown.
Vietnam has reported less than 300 cases and no deaths since January 2020, according to official tallies.
Hopefully these are the right answer choices, if so then your answer will be the most effective way to prevent foreigners policy would be to cut off budget support for that policy. Hopefully this helps.
By forming various organizations.
The European Union, for example, unites Europe (Minus Britain these days) under one banner, thus preventing fighting.
A more direct example is the North Atlantic Treaty Organization. NATO protects the "North Atlantic" and Europe from terrorists and invading countries by using the combined military strength of multiple nations.