Answer:
The Portuguese, in the 16th century, were the first to engage in the Atlantic slave trade. In 1526, they completed the first transatlantic slave voyage to Brazil, and other Europeans soon followed.
Explanation:
<span>The Swiss psychologist Jean Piaget (1896—1980), defined </span>four stages of cognitive development.<span>
Children in the preoperational stage would be unable to distinguish the fact that the beakers held the same amount of water. The p</span>reoperational stage is the period from age two to seven. In this stage, children begin to use words as mental symbols and to form mental images.
