精选优质文档-倾情为你奉上Unit 1 American BeginningsSix main regions of America: New England, Middle Atlantic, The South, The Midwest, The Southwest, The WestThe Mid-Atlantic States (also called Middle Atlantic States or simply the Mid Atlantic) form a region of the generally located between and the . Its exact definition differs upon source, but the region often includes , , , , , , and sometimes and .The continental United States (the 48 contiguous states) is divided into 4 time zones