Answer:
European traders first became a force in the region in the 15th century. The transatlantic African slave trade resumed,
The Inca Empire used the Quechua communication system which was letters and Egypt used the Hieroglyphics which were symbols.
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The correct answer is B, as at the conclusion of the Spanish-American war, the United States gained an empire and new stature in world affairs.
In fact, as a result of the defeat, Spain ceded its territories of the Philippines, Guam and Puerto Rico to the Americans. In this way the US obtained territories in strategic points of the world (Caribbean, Oceania and Southeast Asia), with which its power in front of the rest of the nations was increased.
In addition, the fact of having defeated a colonial power gave the United States a new status as a world power, both politically and militarily.
Opinion polls are made picking a portion of a population and asking them some questions about a given subject. These answers are, then, used to make an idea of what that population thinks about that subject.
The problem is the impossibility of asking the entire population what they think about the subject.
For example, 80% of the persons the poll interviewed agreed that studying is good as early as five years old. The opinion poll, then, will say 80% of the people from that location agreed to that studying starting from five years old is good. The persons asked totalize 5000, while the total population of that place is, for example, 100.000.
So, the statement that defines opinion pools is: opinion pools can give an idea of what a population thinks, but it might be misleading and can never be accurate enough.
The best sentence starter would be number 1