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:
Unlike previous federal policies, President Grants "peace policy" attempted to "<span>B:Provide fair and kind treatment to the tribes", since it was becoming more politically advantageous to treat them harshly.</span>
They were shocked because the Mexican Military had more weapons than them and had more forces too.
The United States emerged as a leading world power after world war I due to the treaty of Versailles. This is my best answer. I hope this helps! :)
