Unit-1 test unit 1 - the american story
1. according to the latest united states census, the approximate population of the united states is
3 billion, 500 million
31.5 million
315 million
3.5 million

The individual census data most recently released to the public is the 1940 census, released on April 2, 2012.

Explanation:

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: