Final answer:
The chief commander of the army in the United States is chosen through the presidential election process.
Step-by-step explanation:
In the United States, the chief commander of the army is known as the President of the United States. Congress does not directly choose the chief commander of the army; instead, the President is the commander-in-chief of the U.S. military forces. The President is chosen through a process called the presidential election, where eligible citizens vote for their preferred candidate. The candidate who receives a majority of the electoral votes becomes the chief commander of the army.
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