The gold rush propelled the expansion and settlement of the western United States on a massive scale. ... This action led to Mexico to declare war on the United States, starting the Mexican-American War. forty-niners: people, especially prospectors, who went to California in 1849 during the gold rush.
Answer:
the adaptation-level phenomenon
Explanation:
People have a tendency to judge stimuli relative to prior experience. For example, if a man's current income increases, he feels an initial surge of pleasure. However, as he adapts to that income level, he comes to consider it normal. He then requires something better to feel another surge of happiness. This is known as: the adaptation-level phenomenon
Adaptation-Level Phenomenon is how people adapt quickly to a new situation, until that situation becomes the new normal
.After getting a better income after a while it becomes normal and you are looking for something new and better man generally is insatiable. Our desires only grow bigger once we have adapted and conquered a particular level
Answer: Epidemiology
Explanation:
Epidemiology is the study that focuses on health-related distribution model and measures for reducing and managing health-related issues.This study defined about determinants of the disease such as why it is caused, when it is caused, where, who etc.
According to the question,John Snow's research is considered as study of epidemiology because he studies about conditions of diseases along with protective measure.He also studied about determinants and distributive functions of health issues.
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Answer:
option: A - Electoral college