Answer:
I believe it's two, gunpowder and crossbow
Explanation:
The soonest realized crossbows were designed in the main thousand years BC, not later than the seventh century BC in old China, not later than the fourth century BC in Greece (as the gastraphetes).
Gunpowder was developed in China at some point during the main thousand years AD. The most punctual conceivable reference to gunpowder showed up in 142 AD during the Eastern Han administration when the chemist Wei Boyang, otherwise called the "father of speculative chemistry", expounded on a substance with black powder like properties.
Financial experts warned the public the the American Economy is slowing down. With this warning in mind, investors started selling their shares in large numbers in September 1929. By 24th October 1929, 12.8 million shares were sold and another 16 million shares were sold at a very low price on 29th October 1929. The panic selling of shares lead to the collapse of the stock market in New York.
The aftermath of the wall street crash was very disastrous. Investors lost their money and was not able to pay off their debts. Many banks closed, leaving their depositors with no money nor hope for the future. Ordinary people lost their means to buy foods and other basic needs like shelter and clothes. Companies have to downsize resulting to firing of redundant workers and lowering the wages of the remaining workers. Unemployment rose to very high level.
The Wall Street Crash led to the beginning of the Great Depression in the 1930s.
Answer:
c=9-b+b
Explanation:
square each side, then subtract a and add b to both sides
It's four. The Romans were fine as long as they payed taxes
