useless trivia: What Word Means: Worn Out, Tired?

Questions

to which influential italian family did the popes callistus iii and alexander vi belong to?

who cloned dolly the sheep from an adult mammary cell in 1997?

what is the wrong use of a word having a similarity with the right one called?

what is the transference of initial consonants of spoken words called?

what was purchased in the russo-american treaty of 1867?