What was the caravel, and why was it so important

During the antebellum period, religion was used by many americans to a) justify the existence of slavery. b) unify all churches against slavery. c) allow slaves to become ordained ministers. eliminate d) inspire slaves to spread christianity in africa.

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.

Which was a problem for american industry in the late 1700s to early 1800s? a. national trade unions b. a shortage of laborers c. child laborers