Aresearcher that that designs a study that will be the same study as another person's study but the specific people involved in the study are different is performing what kind of study?

When france sneezes, europe catches cold.what did prince metternich mean by this statement? people in france are more likely to get sick than people elsewhere. europeans elsewhere are often inspired by events in france. happenings in france rarely spread across borders. all damaging incidents in europe start in france.

Prices for products became more affordable as a result of new forms of ,witch got things to market faster and cheaper

Which best describes the purpose of the south carolina exposition and protest, which was written by john c. calhoun? a) to explain why the south was nullifying the tariff of 1828 b) to describe the ways the tariff of 1828 would southerners c) to persuade northern states to rebel against the federal government d) to ask england for if the south decided to secede from the union