Homework help?9th grade world geography!Please help!?

The subregion of the United States most aided by the development of irrigation and air conditioning was?
A).The South.
B).The west.
C).The Midwest.
D).The northeast.
'

I'm not sure its 9th grade by the way

also another question or more :)

i wasn't here on the day they did this,


hm

2.Twenty percent of the population of the United States lives in the northeast, which covers_____percent of the nation's land area?

A).50
B).25
C).20
D).5

3).
The midwestern city that serves as that region's industrial,transportation, and cultural center is?

A).Detroit, Michigan.
B).Chicago, IIIionis.
C).New Tork City.
D).St. Louis, Missouri.


4).
While at an earlier time, this key feature of the South was an obstacle to industrialization, the region has recently experienced rapid growth due in part to

A).It's history.
B).Argriculture and livestock production.
C).It's climate.
D).Unusual landforms.

5).
A megaloplis is a region

A).Where several large cities and their metropolitan areas develop together.
B).Seen primarily in the West.
C).Of great artistic diversity and cultural heritage.
D).Dominated by agriculture.



Last question

How has the West changed since the day's of the frontier in the 19th century? In what ways is it the same?



Please i need help!:)
and tomorrow we have a test:(
i wasn't at school yesterday!

Oh also are text book is online at the website and i can't stay up all nite searching its Confusing we keep our books in class since we have 8th periods
i guess i should of mention that!:)

doesnt matter if you was there or not..your text should have all the answers. seems to me you need to study the chapters or chapter..instead of tying to sucker us all in to give you the answers! youll never learn anything if you dont look things up on YOUR OWN!!

Your history textbook should have those answers in it. Just look up the chapter your class is studying on your syllabus (if you were given one at the beginning of the year like most of my high school classes were), and search for the answers yourself. I don't know them, but it can never hurt to crack open the textbook.