If the federal and state governments have concurrent authority and the federal government decides to regulate that area exclusively, under the doctrine of federal preemption, the state law .

U.s. history i which statement is true? the missouri compromise ended slavery in the south. the compromise of 1850 eliminated slavery only in the south. the missouri compromise postponed the issue of slavery. the compromise of 1850 ended slavery in every region of the united states.

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.

Why do pregnant women come from russia to be birth tourists? give an explanatory response.