<span>The
challenge that early farmers did not face as a result of the change from a
nomadic lifestyle to an agricultural lifestyle could be early death caused by
disease. Because in agricultural lifestyle, the nomads are now trying to
establish a boundary between their food to eat and food to sell or exchange. It
could also be a challenge for them to clear and cultivate lands because of the
lack of resources.</span>
<span>It was very well.The Greenback labor party controlled a lot of local government and 21 members of congress. Railroad policies which were challenged by the Grange Party was a success.However, the labor movement was unsuccessful</span>
<u>Positive Economists'</u> purpose is to create an explanation of a certain economic phenomena.
These economists use statistics in order to find out the aggregate behavior of the people because of a certain economic decisions. From this, they can developed an understanding to explain the economic phenomena.
<u>The normative economists' </u>purpose is to find out whether a certain economic decision achieve its original purpose.
They used statistic as a quantitative measurements. They determine the goals of a certain economic policy and They compared the statistic before the economic policy was implemented to the condition after the implementation .
This will help them know whether the policy achieve its original goals.
For example. if a certain policy was created to reduce unemployment, normative economists will compare the data/statistic about the number of employment before and after the policy.
Http://www.dummies.com/education/history/american-history/american-preparation-for-world-war-ii/
You're welcome xP