Detente. a policy of reducing Cold War tensions that was adopted by the United States during the presidency of Richard Nixon ... What do you consider<span> the most significant reason for the collapse of </span>
For the Louisiana purchase question, it more than doubled the size of the united states. As for the second question I believe the answer would be "Thomas Jefferson was eager to explore the west to ensure the survival and prosperity of the United States"
Native tribes made advancements in farming and medicine before Europeans arrived.
