Answer:
World War I popularized the use of the machine gun—capable of bringing down row after row of soldiers from a distance on the battlefield. This weapon, along with barbed wire and mines, made movement across open land both difficult and dangerous. so trench warfare was born
Explanation:
Del Verrocchio was Leonardo Da Vinci's teacher or master artist. He retired because he thinks he could not paint as well as Da Vinci. Though Del Verrocchio, Da Vinci would have been exposed to both theoretical training and vast variety of technical skills.
Destabilized the political structure of of many African states
Answer:
A) A Great Economic Depression.
Explanation:
The Great Depression did not occur until after World War II, and was one of the reasons that World War II occurred in the European theater.
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