For which of the following major world events was the spread of diseases a negative effect

These are the answer choices for the question:

A. the technological revolution

B. the mapping of the European world

C. the Columbian Exchange

D. the Reformation

Explanation:

The Columbia Exchange started with the arrival of Columbus in the Lesser Antilles in 1492. From this moment on, other Spanish and Portuguese explorerse and conquistadors arrived and explored almost the totality of the American Continent.

Unfortunately for Native Americans, Europeans carried diseases for which they did not have antibodies, diseases like measles, smallpox, or syphillis. These diseases spread quickly to Native Americans, and the vast majority of them (up to 90%) died from them.

it's a secular holiday. it is and was a custom developed to recognize the ending of a time and a wish for a good future. the kind of kiss you exchange, if you are single, is intended to predict what kind of year you will have in the coming year.

it is saying good bye to the last year with all its ups and downs, and hello to the new year, with all its hopes and dreams.

explanation:

ur mom was made