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发表于2024-11-11
The Department of Homeland Security pdf epub mobi txt 电子书 下载 2024
In the wake of September 11, 2001, the U.S. government felt the need to establish a special department to handle national security--the Department of Homeland Security. But the idea of national security is not a recent concept, and terrorism is not a new concern. In truth, every generation of Americans has experienced some worry that they might be attacked in their homes.
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The Department of Homeland Security pdf epub mobi txt 电子书 下载 2024