Countries with mixed economies include Iceland, Sweden, France, the U.S, the U.K, Cuba, Russia and China. Most industrial countries have mixed economies, but vary in the degree of government involvement. For example, in Western Europe the government generally has a stronger role, while in North America the market is more influential. The only major planned economy is North Korea.
Even though the Chattahoochee River has the sufficient depth and width for part of its flow, namely from Columbus to its mouth at the sea, it is not used for trade because it simply not possible. The reason why it is not possible, is that there's a dam built on it, so it is not possible for any ships or boats to pass the dam and continue their sail up the river.
C. UNICEF
Was established as an independent local non-governmental organization