A millennium equals 1000 years, we calculate the beginning of each millennium the same way we do in centuries, so for example the 3rd millennium BCE includes all of the dates between January 1, 2001 BCE and December 31, 3000 BCE.
I hope this is even a little helpful, I had a hard time with this one.
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I'd say (B) but I'm not completely sure.
Won the war of 1812, created the Jacksonian democracy, and a major general in the U.S army. The Jacksonian democracy has about 4 points to it. So...
I saw how it said they were worried it would be viewed as a manifestation of an unfriendly disposition towards the US. But I'm not quite sure.
The correct answer is C. Assembly line jobs.
Assembly line jobs were rather useful because they created many job opportunities. An example would be in shoe-making. Whereas you once had a single person do everything all by himself, which would consume time and money, now you had an assembly line that would employ different people for different activities and thus increasing the production and employment.