30 points and brainliest to whoever can answer asap. you so
the keating-owen child labor act prohibited the interstate shipment it goods produced by child labor. reuben dagenhart’s father, roland, has sued on behalf of his freedom to allow his son to work in a textile mill.
i’m hammer v. dagenhart (1918), justice day spoke for the court majority and found two grounds to invalidate the law. production was outside the power of congress to regulate, and the regulation of production was reserved by the tenth amendment to the states. day wrote tat “the papers not expressly delegated to the national government are reserved” to the states and to the people.
source: oyez, hammer v. dagenhart (1918)
(a) identify the constitutional clause that is common in both hammer v. dagenhart (1918) and mcculloch v. maryland (1819).
(b) based on the constitutional clause identified in part a, explain why the facts of mcculloch v. maryland (1819) led to a different holding than the holding in hammer v. dagenhart (1918).
(c) explain how members of the public who disagree with the holding in hammer v. dagenhart (1918) could act to limit its impact.

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.