Because they couldn't finical support another war
The Gothic element there is the horror that ensues after he hears the tapping. The character is alone during a spooky, dreary night, nobody found anywhere, and suddenly there is a mysterious tapping by someone, and it turns out that no-one tapped, which means either madness or ghosts, that are either way both elements of Gothic writing.
He supported it because he believed that the powers enumerated in it balance each other out and nobody could become tyrannical by exploiting it. He refers to it as an open door because it can be amended meaning that if something needs to be changed because the spirit of the time has changed, it can be done while keeping the good things.
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For the question, the answer would be absolute horrible. They were only givein small, and i mean very very small rations of very stale bread and water, meaning they were starved and very dehydrated, they were whipped and beatin by SS and Gastopo soldiers and the dead would lay around, in some camps they would take the prisoners on what are called death marches to either where they would "work" or be killed by either fireing squad or gas chamber, if they didint die on the march, they were jam packed in there liveing quarters. When these camps were liberated at the end of the war by either American or Russian forces, they were described as basicly liveing hell, its smelled extremely bad from dead rotting bodys, thoes who were alive were so skinny they could see there bones, plus they were given basicly rags for clothing, and both men and women were shaved and were all given a number that was tattooed onto there forarm
The executive branch enforces laws, legislative branch makes the laws, and the judicial branch interprets the laws