What were some things the american settlers did that upset the mexicans in texas?
multiple answers
a)
they formed alliances with indian tribes
b)
they wanted to govern themselves
c)
they won the battle of the alamo
d)
they set up a dictatorship
e)
they brought slaves
f)
they would not become catholic

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.

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