President Carter faced high unemployment, high inflation, high interest rates, international "stagflation" and an oil shortage to mention a few items.
Brown V. Board of Education helped the civil rights movement of the 50's as it declared that school segregation between white's and black's was unconstitutuional and therefor not allowed in the United States.
2 years and don’t click the link above my answer
In economics there are four different types of market structures. They are as followed:
1) Perfect competition- This allows for businesses to compete against each other for consumers.
2) Monopoly- This is when one business or corporation corners a market. This occurs when a business is the only supplier of a good/service.
3) Oligopoly- This is when a small amount of businesses control a market/product.
4) Imperfect competition
In your question then, the correct answers are : Monopoly, perfect competition, and oligopoly.
The force driving behind European Imperialism in Africa was when the Europeans took advantage of advances in technology to enhance their ability to acquire resources from Africa.