1.what was the significance of an expedition that by bartolomeu dias a. they paved the way for the first european voyage to the americasb. it established a direct trade network between portugal and india c. it prove that it was possible to sell from europe to the indian oceand. inlet spanish colonization of the americas at the philippines2. how did the defeat of the aztecs and inca empires enrich the spanish monarchya. spain began to levy heavy taxes on its americas colonists b. spain sold its lands to the americas to other european countriesc. the monarchy received a portion of all treasures taken by conquest the doors d. spain took control of the slave trade between africa and the americas

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:

legal rights and freedom of speech.i hope that it is correct.

brainliest if correct