Answer:
A frenzy over a threat by communists in the cold war
Explanation:
I'm not sure 100% what exactly this question is asking, but I know World War 1 was the first war to include Gas masks and Chemical warfare, so that is more than likely the answer.
Answer:
the creation of it.
Explanation:
Do you own online school noob.
The panic of 1837 affected<span> the nations </span>economy<span> by entering an </span>economic<span> depression where the business and unemployment fell to a very low level.</span>
Answer:
B
They allowed Europeans to navigate dangerous mountain passes.
Explanation:
