On May 8, 1541, south of present-day Memphis, Tennessee, Spanish conquistador Hernando de Soto<span> reaches the Mississippi River, one of the first European explorers to ever do so.
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It made the united states a rich country. many large businesses expanded ande boosted the economy.<span />
D) To establish boundaries in the event of a nuclear war
Answer: the Soviets in October 1961 demonstrated the power of the hydrogen bomb when they detonate it.
Explanation: The hydrogen bomb is more deadlier than the atomic bomb American detonated in Japan, it can wipe an entire city killing tens of thousands.
The Soviets did demonstrated it power of the "staging" concept in October 1961, when they detonated the massive and unwieldy Tsar Bomba, a 50 megaton hydrogen bomb which derived almost 97% of its energy from fusion. This was the largest nuclear weapon developed and tested by any country in the world then.
A. because the mean always help a certain answer like that.
