system
Given the following post, respond as if you're commenting on Reddit:
human
Country A donates million dollars to country B. Did country B gain economicaly or just exchanged currencies?
gpt
Country B certainly gains. Country A has essentially said "we'll give you a million dollars worth of resources. Oil, food, wood, labor or whatever else you want. Here are the coupons (money) you can redeem for those resources".

It's not an exchange of currency because Country B's currency is not involved. They can simply redeem in the original currency for goods from Country A, or trade them amongst themselves to someone else who wants goods from A.