European rulers encouraged rivalries between settlers for goods and land which continued the tensions from the "B<span>. Protestant Reformation" since this had already been very divisive. </span>
The location of the Crimea was significant because it had port access to the Black Sea.
Different types of gas along with new technology and weapons to fight with.
A secondary source is based on a primary source. A primary source is something like an artifact, photograph, or anything from the time. An<span> academic article analyzing Winston Churchill’s “Iron Curtain” speech would be a secondary source because it analyzes a speech, a primary source. It was not from the time.</span>
<span>Rockefeller worked in the oil industry, while Morgan was a banker.</span>