The primary source would be:B a letter Roosevelt wrote describing it
Secondary sources would be:
A a book describing it
C a cartoon about it
Yes. A book that describes the foreign policy of Theodore Roosevelt is a secondary source.A book that describes something is a secondary or even tertiary source of information. If the source uses secondary sources as a reference and reinterprets the information, then it may be a tertiary source.
primary information is the information/data that you collected and secondary information is the data/information that is collected by someone else but you are using it.
secondary source
Primary source information is original material,Secondary sources analyze and interpret primary sources
It is primary information because it shows information from that time
Primary information is information collected through research that does not already exist (surveys, questionnaires, interviews, observations, etc). Primary information is the product of primary research. Secondary information is information previously gathered and presented in finished terms (not raw data). Secondary information can come from books, scientific journals, dissertations, case studies, etc. It is the product of secondary research.
Primary sources of information are great because they are first hand information from someone who was there. Secondary sources are based on primary sources, and may be biased.
A biography of Abraham Lincoln. (apex)
Primary topics are often secondary sources. Secondary sources analyze in review or summarize information.
It is a good idea to confirm your data with a secondary source.
Secondary keys are the database keys that hold the physical location of a portion of a record in a database or file. They provide a secondary way of accessing the information.
One can find information on CBSE, or the Central Board of Secondary Education by contacting secondary education institutions and requesting information.