In a study comparing the performance of Navajo- and Euro-American children on a maze solving tasks, researchers found that:

answer; the population in brazil is very diverse there are many races and ethnic groups

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.

fertile good for trade etc

answer; ( suicide );