Select the letter of the correct answer. Which of these is most important to include in a summary of this Article?
А
Some historians use the term American Plagues when referring to the diseases
brought to the Americas by European explorers and colonists.
B
While pandemics have unfolded in a variety of different ways, it's believed that the
Bubonic Plague was transmitted by fleas.
с
While pandemics have caused suffering throughout human history, they have also led
to breakthroughs in medical science.
D
Some members of the United States military were the first people identified with the
influenza virus that became known as the Spanish Flu.