The answer is D. I hope this helps.
Thanks to Eli Whitney, by 1824 the U.S. had adopted the concept of interchangeable parts. He was most known for his advocacy of cotton gin and interchangeable parts, and thus helped the American economy immensely.
It probably would’ve been different. I don’t think that if it was black or Islamic protestors then the capitol would’ve been breached. If it had been then the police wouldn’t let them in but instead there would be shots and gas. It would’ve been way more violent.
The answer is <span>the magnetic compass and gunpowder.
The magnetic compass and gunpowder were first developed under the rule of Chinese dynasties.
In fact, the compass and gunpowder were identified as part of the FOUR GREAT INVENTIONS OF CHINA. The other two were paper making and printing.
The magnetic compass was greatly used throughout Chinese history. They would use a magnetic needle that would be place floating in bowl of water. The magnetic needle was called "</span><span>"south-pointing fish" because it aligns itself to the south.
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The gunpowder was discovered in the 9th century but its explosive potential was perfected in mid-14th century.