It is only recent in compared to geological stuff, say mountains or oceans. The Spartans and the Athenians all had huge citizenship issues. The Persians under Cyrus were in a large part successful because they molded the idea of citizenship to mean many things, but it was a vital that you were a citizen . I think human civilizations every where, say even early China and the Mayans all had citizenship requirements. Being part of the hyarchy was the only way to get support from the system.
The word is, I think, a fairly recent invention by some historians.
How recent technological invention is have improved weather observing?
It means the most recent invention.
he was not an inventor
Potatoes
Nano shells.
No. They are fairly recent.
No they don't. And if you think about it - why would somebody who lives underwater need a bra? Bras on mermaids is a recent invention so that they can be visually depicted without offending anybody's concept of decency.
Float glass (glass formed by allowing it to flatten and cool on a pool of molten tin) is a fairly recent invention. It was developed 1953 and 1957 in Britain. However commercial availability was not attained until 1960.,
Television and telephones
No, the concept of the heat death of the universe has not been debunked by recent scientific discoveries.
gunpowder compass printing