Answer:
the correct chronological order would be 3,1,4,2
It's called debt. I think of debt as in the red, the negative zone.
I hope I helped :)
The last one is false I believe. Very shortly after the site was uncovered, archaeologists came to excavate it, and the year after it was discovered they started building a museum on the site. Safe to say robbers probably would've had a hard time pillaging it when the whole archaeological community had their attention fixated on it.
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Answer:
In the early twentyith century alot of immigration caused a mass boost in population in the united states.