Most of Europe the age is 18. Some countries goes as low as 16. In North America, in Canada it is 18 for 3 provinces, in the USA it depends on the state. Puerto Rico is 18. Mexico it’s 18. Nearly all of South America it is 18 with a couple of exceptions where it is 16 and one case where it is 20. Most of Africa it is 18. Asia is mix but China it is 18.
Really depends on where you are.
Most of Europe the age is 18. Some countries goes as low as 16. In North America, in Canada it is 18 for 3 provinces, in the USA it depends on the state. Puerto Rico is 18. Mexico it’s 18. Nearly all of South America it is 18 with a couple of exceptions where it is 16 and one case where it is 20. Most of Africa it is 18. Asia is mix but China it is 18.
So in the vast majority of places, my initial statement that 18 is old enough to legally buy alcohol was correct.