Explanation:
<u>Urbanization</u><u> </u><u>:</u>
It refers to population shift fromrural to urban areas. It is also a process of making an area more urban.
The Pacific Railway Act<span> was signed into law by President Abraham Lincoln on July 1,</span>1862<span>. This </span>act<span> provided Federal government support for the building of the first transcontinental </span>railroad<span>, which was completed on May 10, 1869.</span>
<span>All were actions taken by the USA</span>
Answer C.
The kingdom of Mali of West Africa controlled trade routes which had previously been controlled by the kingdom of Ghana.
With the demise of Ghana the Mali empire arose in West Africa taken all the trade routes left by Ghana.
