<span>The correct answer should be A. The work required on plantations could only be done by slaves. The slaves were even cheaper than indentured servants and could be controlled more easily. They could just import them and keep them forever while indentured servants often caused problems like the famous Bacon's rebellion.</span>
Metal and stone did not spoil or tear, but grain and cloth did
Papermaking (50–121 AD) ...
Silk. ...
Tea Production (2737 BC) ...
Kites. ...
The Seed Drill (250 BC) ...
Increasing debt has lead to a growing emphasis on economic issues