Answer:
It was caused by an H1N1 virus with genes of avian origin. Meaning, it came/spread from birds such as North American and wild.
Explanation:
American Revolution or The American War of Independence.
<span>The railroads had to pass through mountains and rivers.</span>
Answer:
Communism, also known as a command system, is an economic system where the government owns most of the factors of production and decides the allocation of resources and what products and services will be provided.
Explanation:
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I’m not sure if this is right but it could be horses
