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.
Migration led to the population of the world because human life started in Africa, meaning that for people to inhabit places that are now known as America, Europe, Australia, etc., they had to all migrate out of Africa.
Answer:
As goods became more and more scarce, prices went through the roof, and soon famine consumed Russian cities. World War 1 depleted the countries economy and led to the Russian Revolution in 1917 which led to the collapse of the empire and the takeover of the Bolsheviks.
Explanation:
<em>Weather! :)</em>
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<em>Hope that helps! :)</em>
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<em>-Aphrodite</em>
<em>Shay's Rebellion</em>
Explanation:
The Articles of Confederation was the first constitution for the United States. It is known for being very weak and giving little to no power to the national government. With the Articles of Confederation, the government could not regulate trade, draft soldiers, create and enforce laws properly, tax citizens, and other important matters.
Since the national government was so powerless, most of the power was in the hands of the people and the states. This meant that it was hard to keep people in check, which eventually caused Shay's Rebellion.
Shay's Rebellion was an uprise of farmers who did not want to lose their property and opposed high taxing. Courts were trying to take away their property, as many poor farmers could not pay their taxes. This caused many farmers to revolt, causing a few casualties. This proved the national government was too weak under the Articles of Confederation, as they could do nothing to stop this.
