What information is needed to investigate and describe a region by its geographic characteristics?

The geographic characteristics of a region include aspects of both its physical geography and human geography.

For physcial geography, information on the regions orography (relief), climatology, and hidrology is needed. From these information, an accurate description of the physical land can be made, taking account atmospheric, land, and water factors.

For human geography, an important information is the demography of the place: how many people live there, what percentage of them are men and women, what is the age distribution and the ethnic profile, etc.

Another important information is to find the population pattern of the area: is it more urban or rural, are there many villages or only a few, are the municipalities connected, etc.

a. it led to stricter immigration laws.