Answer:
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The Constitution enumerates certain powers which are reserved to the federal goverment and other powers which are delegated to the state.
Those powers which are not explicitly related in the document to any of the goverment levels will automatically be reserved to and exercised by the supreme federal goverment.
Question:
What is the * mean at the end of the sentence?
The Chinese constructed the "Great Wall of China." Some difficulties they had to face was possible invasion whilst they were vulnerable and focused on building the wall, invading animals, foreign lands, malfunctions with the building materials, (great stone blocks,) and possible death, since they were building in sometimes treacherous conditions.