I think that is it safe to say (I mean by this: check if it's among your options) that both individual and international trade are voluntary exchange of goods -both parties have to agree on it without being forced to it. Also they should be mutually beneficial - otherwise the two parties would have have agreed!
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Competitive and empowering mindset helps athletes think they can achieve anything, along with the best and right tools. For example a football athlete thinks there's nothing he can't achieve because he has the agility, strength and physical fitness to play.
I feel like you shouldn't need to ask anyone but yourself why other people should be treated fairly
The statement above is false. It is because not all people are the same, they are unique in their own ways and how they live their life. It does not mean because they bought the same things as other individuals, they will behave or think the same. Things that they bought won't affect how they will behave or how they think about things for all people are different.