A(n) is an event or condition that precedes a specific behavior and acts as either a trigger, a signal for reinforcement or a motivating factor.

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.

Does manufacturing in the midwest affect the nations economy

Which us president proposed a decimal based measurement system for the us