Why is it useful for historians to base certian studies on the analysis of geographic regions.

similar events and trend often take place on different places during the same

periods. d. experience has confirmed the analyzing periods is the most

effective approach to history .

Explanation:

similar events and trend often take place on different places during the same periods. d. experience has confirmed the analyzing periods is the most effective approach to history

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation:

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.