What landmark discovery was made in 1493, and how was another discovery made in 1502?

s the president shall be commander in chief of the army and navy of the united states, and of the militia of the several states, when called into the actual service of the united states; he may require the opinion, in writing, of the principal officer in each of the executive departments. sooo yeahhh

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:

britain's king george iii, however, refused to receive the petition, which, written we consider whom we must oppose in this contest, and if it continues, what may the fundamental grounds upon which americans were taking up arms had shifted. that king george refused to so much as receive the

the right answer is d) a conference committee. it is a temporary panel formed by house and senate members in order to reconcile differences in legislation.