<span>A is the correct answer. Ur became part of the the Akkadian Empire, founded by Sargon of Akkad, roughly around the 23rd century BC. Sargon was one of several Semite rulers, and these rulers first conquered Nippur in the 3rd millenium BC. Ur and Nippur are located in modern day Iraq.</span>
Columbus was quick to do these things because he was so eager to make his mark on the world as an explorer
They wanted to encourage more profitable imports for their nations as their economy was bad. However, other nations economies were bad as well, staunching the world economy even more.
Specific people who valued religion quite significantly played a role in this. I have studied this material so long ago that I cannot name those particular figures. Do some research and I'm sure you'll be able to find out for yourself.
The Empire was divided into several small territories...and many dynasties came to rule.