The Law of April 6, 1830 was a result of

The Law of April 6, 1830 was issued because of the Mier y Terán Report to counter concerns that Mexican Texas]], part of the border state of Coahuila y Tejas was in danger of being annexed by the United States. It also outlawed slavery in Texas

Explanation:

all choices are correct

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i think a judge or jury, as they preside over the court and is the central figure in a trial.

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