Answer:
Gettysburg was a huge victory for the North, forcing General Lee to retreat and shifting momentum to the Union.
Explanation:
Exchanges<span> of plants, animals, diseases and technology transformed </span>European and Native American ways of life. Beginning after Columbus' discovery in 1492 the exchange<span> lasted throughout the years of expansion and discovery. The </span>Columbian Exchange<span> impacted the social and cultural makeup of both sides of the Atlantic.</span>
P. (probably D.) It limited the powers of government through check and balances.
On Wikipedia it says, "The new Constitution provided for a much stronger federal government by establishing a chief executive (the President), courts, and taxing powers." The constitution contained the checks and balances system, and this textual evidence is describing it. I cross checked this with other sources, so it is reliable.
Yes, it is true that historians believe that the time from prehistory to the development of agriculture spans more than two million years, since it is thought that humans first appeared on Earth roughly six millions years ago.
