When did the baby boom take place in the United States? A. between 1940 and 1960

B. between 1946 and 1964

C. between 1956 and 1974

D. between 1960 and 1980

B IS RIGHT

B

Explanation:

peter heather.

that is the most recent

hope this : d

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: