Which statement describes an effect of the columbian exchange?

a.
huge numbers of indigenous americans died from european diseases.

b.
european crops wiped out and replaced crops native to the americas.

c.
empires in the americas became wealthier and more powerful than ever before.

d.
horses became essential for trade and warfare in asia and europe.

The Columbian Exchange also had positive and negative effects. The positive side was the exchange of technology in agriculture, for example, which increased crop yields and food production in favor of Native Americans and in favor of Europeans. One of the negative effects was certainly the appearance of many diseases that Europeans transferred to the American continent. Native Americans first faced such illnesses, were non-resistant to them, and many of them died.

The correct answer according to the options offered is: A.

- "bill clinton ( the 42nd u.s. president, served in office from by low unemployment, declining crime rates and a budget surplus. during clinton's second term, the u.s. economy was healthy, unemployment was low and the nation experienced a major technology boom and the rise of the internet."

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