Where were Thaddeus Kosciusko and Casimir Pulaski, two major contributors to the war effort, originally from?

Poland

Explanation:

Thaddeus Kosciusko and Kazimierz Pulaski were from Poland, Johan DeKalb was from Bavaria, Friedrich Wilhelm von Steuben was from Prussia, and Louis Lebeque DuPortail, like Lafayette, was from France.

1920's

╾━╤デ╦︻

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: