Do not drink mercury .
Walls are effective .
Guns are better than swords. Fireworks are cool , and can be made into bombs .
A president is better than a royal family .
The correct answer here would be the option C.
The United States since the Industrial Revolution have been an industrial and manufacturing society. But, over the years their industry shifted from manufacturing to services, as now instead of factories the large number of people is employed in the service industry. The shift happened among other things, the cheaper labor in different countries where the factory owners have decided to set up shop.
The United States' role in world affairs was very limited
It was the The Battle of Antietam during the Civil War that was the bloodiest single day in American history--with he battle leaving roughly 23,000 men killed or wounded.
<span>The Ghana, Mali, and Songhai empires each grew wealthy and powerful through their trade of many products, but particularly gold. Because of the the empires were so heavily dependent on trade, various circumstances that diminished the empires' trading capacities, including the death of a leader or the strengthening of a rival empire, eventually led to their decline.</span>