President Lincoln demoted McClellan because C. McClellan failed to defeat Lee at Antietam Creek. McClellan also failed to pursue Lee after the Battle of Antietam despite Lincoln's commands.
Answer:
A. The creation of the mobile X-ray machines allowed the soldiers to have a much higher chance of survival as the doctors were able to find shrapnel and other issues before performing surgery
Explanation:
Marie Curie invented a vehicle containing an X-ray machine and photographic darkroom equipment that was used in WW1.
Answer: The Berlin Conference of 1884–85, also known as the Congo Conference regulated European colonization and trade in Africa during the New Imperialism period and coincided with Germany's sudden emergence as an imperial power.
Here's a link that hopefully helps you:
https://www.smithsonianmag.com/smart-news/five-things-know-about-declaration-sentiments-180959352/
