They are different places
Well Carl Linnaeus was the guy who classified the different species of organisms into categories and gave them a Latin name for the Genus and Species. So I would say classification of organisms.
Some Athenians blamed the trouble on Solon, especially after he left the Athens for ten years. A lot of the old social norms re-appeared and their were irregularities in the reforms that Solon had recently implemented. Examples of this were very prominent in the government where some officials who had been elected refused to Stand down or important posts were left open, with no one to fill them. After solons rule followed a tyranny by one of his family members and Solon proved disappointment for the Athenians, whom he said should have stopped him.
A Potlach is a ceremonial feast, common with the Northwest Native American tribes, wherein possessions were given away or destroyed by the wealthy tribespeople in a show of their opulence and wealth.
The answer is checks. Older people use check as they're a lot more simple than technology today.