Manifest destiny ocuured between 1820 with the Missouri compromise and act of 1856
So they could have more MONEY
true Great Britain is an example of a core nation
The period that started 4000 b.c. is important because it is the period when the earliest civilizations flourished and inventions were made. Earliest known civilization arises in Sumer (4500–4000 B.C.<span>). Earliest recorded </span>date<span> in Egyptian calendar (4241 B.C.). Hope this answers the question. Have a nice day.</span>
