What were the effects of isolationism and appeasement?

Isolationsim set USA apart from the world troubles hence securing their military, resources, finance (especially since the wall street crash), political scenario, etc. this was both good and bad considering many US citizens hated the TOV as their ancestors were german.

Appeasement's biggest advantage was that it gave time for the allies to rearm. The general public opinion supported disarmament and opposed war. Many british people sympathised with the idea of bringing german speaking people together.
However, it gave hitler time to conquer more land and spread fear. It lead to war. It gave hitler time to rearm as well. It revealed that hitler could not be trusted and that all his promises were empty ones. Mainly, it opposed the policy of pacifism that in turn lead to what everybody dreaded- world war.

Dhariiet beecher stowe

The price of oil and inflation are connected in a cause and effect relationship, that is, when the price of oil increases, inflation also increases in an economy. this is because, oil is a major input in the economy, that is, it is used for critical purposes such as fueling of vehicles for transportation, for running of industrial generators and machines, for heating homes, etc.for instance, if the price of oil increases in an economy, it will increase the cost of production for those using the oil in their production processes and they will automatically increase the cost of their products in order to offset the extra costs. this leads to general increase in the prices of products in the market and result in inflation.