Read the excerpt from Roosevelt’s Executive Order No. 9066.Whereas the successful prosecution of the war requires every possible protection against espionage and against sabotage to national-defense material, national-defense premises, and national-defense utilities as defined in Section 4, Act of April 20, 1918, 40 Stat. 533, as amended by the Act of November 30, 1940, 54 Stat. 1220, and the Act of August 21, 1941, 55 Stat. 655 (U. S.C., Title 50, Sec. 104).What assumption is Roosevelt making in this paragraph?

Based on the information given, the assumption that Roosevelt is making in the excerpt is that The US is under threat of espionage and sabotage.

It should be noted that The Executive Order 9066 was signed by President Roosevelt during World War II.

The purpose was simply to incarcerate Japanese Americans, and German Americans in military zones, far from the West Coast.

Therefore, the the assumption that Roosevelt is making is that The US is under threat of espionage and sabotage.

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The assumption Roosevelt is making is:

The US is under threat of espionage and sabotage.

Explanation:

The Executive Order 9066 was signed by President Roosevelt during World War II. Its purpose was to incarcerate Japanese Americans, Italian Americans, and German Americans in military zones, far from the West Coast. In this particular passage, President Roosevelt expresses the need to protect the country against espionage and sabotage. According to him, such protection is crucial in times of war. Since the USA were at war, it seems natural for the president to assume the nation is being spied on and sabotaged by the enemies. He would rather assume such threat exists and act to prevent or fight it as efficiently as possible.