Answer:
Secondary sources : The data which are found from individual person, organizations, agencies, books, journals, magazines, annual reports, etc. are secondary sources of population data.
The Rocky Mountains is the largest mountain system in N.A
Answer:
The rust belt of the united states would be a formal area do to the whole area all being swing states, or that they were all specialized in iron and steel production in before the 1970's.
Explanation:
A formal region is an area inhabited by people who have one or more characteristics in common. Shared characteristics may be a common language, economic activities, such as a particular crop production, or physical characteristics, such as the climate of an area. Some formal regions have distinct boundaries which make them easy to identify, such as counties or states. Examples of formal regions are Europe, Africa, United States, and Canada.