The independent variable is the temperature.
The study aims to assess how the temperature level affects another variable, that, in turn, will be the dependent variable: the mood of the participants. The aim of the study is to conclude whether it is possible or not to infer causality between those two, in other words, to see whether different levels of temperature (<em>the cause</em>), trigger the emergence of a certain type of mood <em>(the effect).</em>
Answer:
Unified the allies front against the axis
Explanation:
The United States was a key player in the Second world war. As the Japanese forces rallied at Pearl Harbor in Hawaii, they took the Americans by surprise. What resulted was a mammoth loss of life totaling around 2300 people. A massive impact on the American navy fleet and chief of all, a huge depletion of the American oil storage. Had the Japanese pressed further, almost all the oil reserves in the tankers held at the harbor would have been destroyed. On this account, the war could have even lasted much more longer.
The attack on the Harbor dealt a huge blow on the American people, it united a divided nation for war. What followed was a deadly response from American. It spurred the nation to go for the war.
