Meriwether Lewis and William Clark helped open the American frontier to settlement by exploring the regions further out west. They mapped these territories and found accessible routes, so that Americans could move further out west and settle the land before the Europeans could claim it. There was also a smaller objective of studying the science and possible economic qualities.
The answer is "operant conditoning".
Operant conditioning is a technique for discovering that happens through prizes and disciplines for conduct. Through operant conditioning , an individual makes a relationship between a specific conduct and an outcome.
Operant conditioning depends on a genuinely basic preface - activities that are trailed by fortification will be reinforced and more inclined to happen again later on. In the event that you recount an entertaining story in class and everyone snickers, you will presumably probably recount that story again later on.
Answer:
B. by maintaining an equal distribution of wealth among all ethnic groups is the correct answer.
Explanation:
They are likely to reason out that the third world nations are undeveloped because of their lack of modern economic activities and they are not well introduced to new techniques or machines that have made them to lack and to be underdeveloped than other world nations.
