<em>The answer is </em><em>B</em><em>.</em>
<em>They needed more land for growing populations.</em>
The kingdoms of Ghana, Mali, and Songhai prospered primarily due to their "<span>(1) exchanges with Indian ports" but it should be noted there were other factors. </span>
Answer:
Bank holiday
Following his inauguration on March 4, 1933, President Franklin Roosevelt set out to rebuild confidence in the nation's banking system and to stabilize America's banking system. On March 6 he declared a four-day national banking holiday that kept all banks shut until Congress could act.