Labor unions can affect the economy by possibly providing higher wages for its workers, but it will simultaneously lower the profits made by the company, and create fewer jobs. This is because labor unions encourage the benefit of the workers (as the workers join together to fight for better treatment), but it will discourage other companies/businesses from investing in the company. So although it benefits the workers morally, it can negatively affect the success of businesses in the economy.
Usually yes. But the form of government and control that the US has is different, so they manage to manage these differences in order to be able to do their duty well in a coordinated manner.
Between five and six million <span>Jews were killed during the holocaust.
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Keeping in mind that the Triple Entente was formed between France, Russia, and Britain in 1907 (all of them considered as powerful European countries); from Germany's perspective, this alliance represented a real threat to their existence and power in the region. And that's why Germany felt in danger and was so worried by the fact that this powerful alliance surrounding them could attack and cause them huge damage.