Hans eysenck suggested that two traits of the five-factor model were the most important traits - his assertion was supported by jeffrey gray, who linked these two traits to fundamental reward and avoidance systems in the brain. which were the two traits?

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it

which sentences ? that question is incomplete

answer; can each be concretely realized in different ways;

answer; because they must appeal to a broad cross-section of the population;