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A blockage of which branch of the aortic arch would interfere with blood flow to the left arm?
Mining
The extraction of valuable minerals or other geological materials from the earth.
Railroad Industries
A sector centered around the development, maintenance, and operation of railways, which played a critical role in economic growth and the expansion of trade and transport in the 19th and early 20th centuries.
American Workforce
The labor pool in the United States, consisting of all individuals actively engaged in employment or seeking employment.
Worked For Wages
The concept or state of laboring in exchange for monetary compensation.
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