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.
All of these are defensible. Of course debt rises in war, and decreasing taxes will benefit an economy where taxes are no longer needed (post-scarcity.) Political and geographical boundaries are outmoded and a world without them is not only possible but existed for much of early human civilization. As for the government, a government would run more efficiently when everyone is in basic agreement with what to do and how.
I would question your teacher on this. Anyone can defend these perspectives...
This statement is true because Hannibal DID cross the Alps with Elephans. .
The idea that a country or region should specialise in making and exporting goods and services that it can produce most efficiently.
It was after world LL when the economy crashed. many recognize it as the stock market in NY crashing , but it's actually affects places all around the world .Main reasons for this great depression are. 1. the increasing debt to fund the war. 2. the higher demands on crops and and product and putting many farmers out of business. 3. The unbelievable lowered price on everything.