Foreign policy is the decisions made that primarily affect a country's

imports and exports

internal matters

relations with other countries

relations with its citizens

Relations with other countries, is the correct answer.

Explanation:

Th foreign policy can be defined as the policies that a country follows for its national interest while interacting with other countries. In foreign policy national interests are paramount and the policies are implemented in a manner to meet its national interests(Economic, Military and Cultural). Earlier the foreign policy was related to military, but in modern globalized world it includes trades, human rights and environmental issues. In united states the Executive branch deals with foreign policy. In the past US followed the policy of Isolationism and recently the Internationalism.

a is true because it know the force.

ps maybe give us more info?

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genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.