Answer: When a bill fails it has to go back and forth until it reaches the Pres. which then he could veto, pass, or pocket veto.
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Answer:
The connection between steel and the railroad system is the railroad system couldn't exist without steel. That's why things like the Bessemer process where invented because steel needed to be produced fast.
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Answer:
The protesters were calling for democratic reforms.
Explanation:
When the protesters called for democratic reforms, the position of the power holder in China could be threatened. This is why the troops fired on the protesters.