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>
My guess is <span>B: Serf->Lords->King->Knight
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Answer:
The Franco-Prussian War 1870-71 was one of the most significant wars of the nineteenth century. It changed the balance of power in Europe and resulted in France's relative decline, and confirmed the rise of a United Germany as the major power.
Explanation:
Slaves helped increase the demand for manufactured goods and made them more profitable for the sellers. This helped the industrial revolution to grow. If this helps please give rate, thanks and brainliest ;)
It’s let them have more detailed paintings!!
