During the 2008 presidential campaign, the two leading candidates for the Democratic nomination were "an African American man and a former first lady" The former being Obama and the latter being Clinton.
In the 1700s, James Watt caused a revolution in transportation<em> by improving steam engine technology.</em>
He was a Scottish inventor and mechanical engineer. He made improvements on Thomas Newcomen's steam engine that was patented in 1698 and widely in use at the time of Watt's birth ( 1736).
It all started when Watt was given a model Newcomen engine to repair. He realized it was very inefficient and he began to find ways to improve its performance. He designed a separating condensing chamber for the engine to avoid huge losses of steam. He patented his improvements in 1769.
A unit of measurement of electrical and mechanical power -<em> the watt</em> - is named in his honor.
At this time the US went to Defcon 2
A.
Alexandrian Greeks placed an emphasis on Hellenistic culture, in part to exclude and subjugate non-Greeks. The law in Alexandria was based on Greek—especially Attic—law. There were two institutions in Alexandria devoted to the preservation and study of Greek culture, which helped to exclude non-Greeks.
