is there an Arid America
Nevada has extensive deserts, defined as having less than 10 inches of precipitation annually, and is commonly considered to be arid for general purposes of climatic classification. However, Nevada...
it is humid because it usually rains alot and the amount of precipitation is alot.
The entire Gulf Coast region of America, including Louisiana, is very humid.
I'm not familiar with those terms, but New Jersey is definitely not arid!
Meso-America is located in Central America (Meso is a prefix meaning middle).