How did the department of war change in terms of its name and organization?

the department of war was established in 1789 to manage the us military. the department established an official army instead of relying on militias. the national reorganization act of 1947 changed this division of the cabinet by creating the department of defense. it oversees the nation's military actions. in 2002, the department of homeland security was formed to focus on safety within the nation's borders

The Department of War was established in 1789 to manage the US military. The department established an official army instead of relying on militias. The National Reorganization Act of 1947 changed this division of the cabinet by creating the Department of Defense. It oversees the nation's military actions. In 2002, the Department of Homeland Security was formed to focus on safety within the nation's borders

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explanation:

i believe the correct answer is b.