30 POINTS PLEASE During the 1820s and 1830s, manufacturing and trade were the primary economic activities in the - Gulf Coastal Region

Gulf Coastal Region

southern plantation towns

southern plantation towns

western United States

western United States

cities of the Northeast

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: