It’s a democracy.
People vote for a party and this party is governing the country.
Because of the unrestricted attacks German submarines were making on American ships
They differed mostly <span>in their relationships with the American Indians they encountered. The French built positive relations with the locals and traded with them which helped them get fur and help with hunting. The Spaniards were conquerors and were all about finding gold and Spreading Christianity and they killed and enslaved numerous people while doing it and didn't care about the locals.</span>
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If only one company provides a service it can monopolize that sector and cause price gouging. If several companies provide a service and those companies must be competitive with each other to attract business/customers.