One economic problem was that businesses were not as healthy. People started losing money because they had numerous investors and they couldn't find a way to pay them back because they couldn't earn as much as they received in investments which caused investors to lose money in reality which harmed the businesses.
Another is that the consumers were indebted more than it was normal. People were spending more and more money and they in reality didn't have this money earned so the debt started increasing dramatically and when they couldn't pay back the debts the bubble burst and an economic crisis was introduced.
After almost two thousand years of life in the scattering, the Jews began to return to Israel after the Second World War. It was preceded by many agreements, promises, that by the decision of the UN, the Jews would be allowed to form their own state in Palestine. Of course this did not go without conflicts and struggle, because the Arabs who had already lived in Palestine claimed that Palestine had been their land for many centuries, calling on mosques that exist on the hill of the temple. On the other hand, the Jews claimed that Palestine was actually Israel, their promised land according to the Bible, and called for a crying wall, the remains of the Jewish temple, which according to the Bible existed before the Arabs were in Palestine.
The answer is: Jews and Arabs.
Texas was claimed after the Spanish war
They had the ability to take inventions created elsewhere and use them on a much bigger scale.
Yes it did it also increased businesses for other people to work in