Answer:
Hitler's invasion on Poland in September 1939 is what made Great Britain and France to declare war against Germany.
Explanation:
Hitler hoped to force Great Britain's surrender by a mass bombing on Britain.
The assassination was premeditated because the conspirators planned to kill Ceaser before he left for Parthia. He would be gone to Parthia for several months so they contributed time, politics, and other aspects. Despite their short amount of time, they managed to pull it off.
One effect of the conflicts between Native Americans and white settlers was that "<span>c. Over time, Native Americans lost the ability to effectively resist white settlement," since the settlers outnumbered them and used superior weapons. </span>