Because if their names were on the ration books, they'd know that they are Jewish, and Miep would be forced to give their location to the authorities. At the time they would be caught and sent to concentration camps.
As of 2020, the majority of people belong to sedentary cultures. In evolutionary anthropology and archaeology, sedentism takes on a slightly different sub-meaning, often applying to the transition from nomadic society to a lifestyle that involves remaining in one place permanently.
The textbook’s authors are correct to conclude that Congress only has few, if there is any, powers remaining. Congress hasn’t declared war since 1941 of December, clearly presenting that Congress has no control over whether United States can go to war. One major reason that Congress is in this situation is because the president claims that that he inherent the sole executive power to defend America’s interest. Another major reason for Congress lack of war power is because of Truman.