<span>During the period of the Crusades, warfare between Christians and Muslims lasted nearly 200 years.</span>
2 of the most common problems that many European colonists faced were, a lack of food due mostly to improper knowledge of farming, and hostile native population .
A is the answer i beleive<span />
Perspective on who was entitled to the rights.
All of the Founders agreed that white, land-owning men were entitled to the rights of the Constitution. Beyond that group there was disagreement. Therefore, to get the passage of the Constitution some made compromises knowing the states could adjust laws as needed.
Blacks were not considered people in some cases, let alone entitled to rights. Women also were treated in a similar way. As the US grew so did the groups included in the democratic process.
This was the Columbian exchange, named after Christopher Columbus, who contributed to the fact that the continents were now in contact and that the exchange was now possible.
It's not called the European Exchange because it involved more than one continent: it actually involved all of the continents
