Answer:
the use of poison gas and machine guns
Explanation:
Aerial attacks weren't really a thing, unrestricted submarine warfare was a reason why the US joined the war but not a factor in high casualty rates, and blimps using direct artillery fire isnt as practical as machine guns and poison gas
Mexico at first did not allow the people of Texas to own slaves. After winning independence and however, Texas allowed slavery. Once slavery was allowed, after a few years of independence, texas asked to enter the US as a slave state.
So Texas went from a territory of Mexico that had slavery banned to a state in the US with slavery (after independence)
hope this helps
By giving into much of Germany's demands. Britain, and allies allowed germany to annex slovakia in hopes that it would stop his aggression. However, this didn't last long and eventually Germany was to aggressive to appease.<span />
