Indigenous peoples in the americas had never eaten pork or beef before contact with european explorers. which of the following accurately explains why they had not done so?
a. cattle and pigs were considered unclean.
b. cattle and pigs were found only in europe
c. cattle and pigs were too expensive to raise
d. cattle and pigs were considered sacred

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:

probally   a few days after there called