1) First modern credit card introduced. 2) First organ transplant. 3) First "peanuts" cartoon strip introduced. 4) Korean war begins. 5) Senator Joseph Mccarthy begins communist witch hunt. 6) U.S president Truman orders construction of Hydrogen bomb. Hope this helps :)
There was no slavery allowed
Those who wanted to invest heavily in plantation farming had to settle in areas that were arable, fertile and had conducive environment for agriculture. The majority of such lands was in the south and thus many farmers settled in the southern regions, unlike the northern region which was infertile, and only conducive for industries.
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