Answer:
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Https://2ndlook.wordpress.com/2009/04/06/dravidian-history-no-one-talks-about/, This page should have it
Answer: 11 states
Explanation: The Confederate States of America consisted of 11 states: 7 original members and 4 states that seceded after the fall of Fort Sumter. Four border states held slaves but remained in the Union.
Air brakes were an invention that improved railway safrty
The answer is B - Philadelphia