What is urbanization? * 5 points
The development of factories
a way of organizing workers
a feature of the southern economy
the growth of cities

Urbanizition is basically the process of making an area more "urban". So adding buildings and people to an area.

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:

the answer is mass marketing.