system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does a country lend money to another country?

 I've been reading about national debt, so I wonder, when a country lend money to another, I picture trucks loaded with tons of money, since it is millions or billions of dollars, so it's really like that or just a E-transfer?
gpt
Countries rarely set up specific loans at all. Most debt is that the country creates a treasury bond and says "buy this for 100 dollars and in 5 years you can turn it in for 105 dollars" type deal. Then one country just buys a bunch of those. Very rarely is it set up as a specific loan like you'd take from a bank.