Q: How did the lives of free blacks in Texas change after Texan independence? A:
1. The population of free blacks increased after the Republic of Texas abolished slavery.
2. Many free blacks enlisted in the Mexican Army to fight against the Republic of Texas.
3. The Republic of Texas passed laws denying citizenship to free blacks.
4. The Republic of Texas passed reforms improving the social status of free blacks.

Afull irb committee meeting is convened and one agenda item is a new research proposal to evaluate how mothers interact with their learning-disabled child. the inclusion criteria require the children to be a minimum of five years of age. the protocol requires the mother of the child to look at the child without any expression and not to talk to the child for three minutes. the committee determined that the mother's required task may upset the child. the irb approved the study with appropriate language in the parental permission form regarding the possibility that children might become upset. after the start of the study, the principal investigator reports to the irb that, as expected, one of the children became upset. the incident was handled according to the protocol and the child is fine. what should the irb do with regard to this report?

What did justice brown’s verdict in plessy v. ferguson state?

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.