During times of civic unrest such as riots, the national government can summon the national guard to its help if it thinks that the local forces cannot stop it or if the riots are going out of hand.
Answer:
The landscape of the West was formerly Indian country and now it was populated by ranchers and farmers who could move their goods with the help of the railroad. ... The railroads made the greatest change because the people to the West, They could ship goods and people on the railroads, it brought jobs, etc.
Explanation:
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Austria used it as a flimsy excuse to start a war with Serbia, which it had been wanting to do anyway.
