Linguists have organized the worlds languages into

Linguists have organized languages into language families, that is languages that are related to each other: this means that they used to be one language, but the speakers of those languages were separated and their languages shifted apart and eventually became separate

He got it right defiantly right

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.