The first reason is their size. They are very small and are very difficult to see. Special technology needed to be developed in order to observe them and their behavior and reach the conclusion that they were in fact infectious agents that could cause diseases. This wasn't possible before because the microscopes weren't as well developed.
Another is that they have a very long incubation period. This means that if you have them, a long time will pass before they start harming you which meant that many people believed them to be harmless since they couldn't track their behavior over a longer time period, also due to the lack of good technology.
The answer to this question is B Connecting the past and present. This is because he says "Those who cannot learn from history are DOOMED TO REPEAT IT." This would mean go back in the past.
Answer:
D
Explanation:
Hope that my answer helps you!
A, The trial of Peter Zenger is widely credited with being the first example of American <u>freedom of press</u>, even though the American nation did not yet exist.
Answer:
she said that it's amazing how many things you can get done while falling.
