Verrocchios reputation as one of the great relief sculptors of the 15th century was clearly established with his cenotaph or memorial in the cathedral at pistoia
The answer is D. <span> invention of the first steel tools
Actually, this very topic is still a hot debate among scientists because the shift happens on different reasons in each region of the world.
But one thing they have in common is that Steel tools give the member of early societies the capabilities to rake uplands and cutting up crops that really useful in farming and herding.</span>
He predicted "that the day will come when ... you will have to make a ... an area of the new Czechoslovakia with a significant German-peaking population"
