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.
A.<span>September 11 attacks in New York city; the USA reacted by invading Afghanistan to flash out the leader of the terrorist organization,responsible known as Osama
</span>b.<span>attacks on US embassies in North Africa; it occurred in 2010, in Benghazi Libya, whereby a USA ambassador was killed. There was an attempted attack in Egyptian Embassy.
</span>c.<span>ISIS mass shootings and bombings in Paris which took place in 2015
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Southern Redeemers. Northern Democrats. Radical Democrats.
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