Acting under which title does the President have overall responsibility for all interactions between the United States and foreign countries?

The title of the President that gives him responsibility overall for foreign interactions is the Chief of State.

Explanation:

The President represents the United States to the rest of the countries and governments around the world. Thus the President is in charge of advancing the values and ideals of the United States and protecting the interests of the United States on the global stage. The President is the maximum authority representing our foreign interests abroad.  The President represents the United States in global alliances like the G8 and he meets bilaterally with other world leaders to negotiate treaties and agreements that promote trade and investment that is beneficial for the country.

this is an outline for the decisions that frankie is going to make

opportunity cost

willingness to buy

price or quality

of course, there could be many economic strategies that should be considered important while making decision. opportunity cost is the foremost significant factor while considering any economic option. when you buy something, you should know how much you are forgoing for this product. indeed, you could buy something different with this measure if you changed your mind. willingness to buy shows how much surplus you are earning while making a decision. it is important because it shows you buy what you want or you buy because you have only limited amount of money. the price or quality can be considered as a general economic option that we are applying while buying something. when you buy something, price or quality could be one of the options. indeed, they define the characteristics of the product.    

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