What is low-grade fever? A fever is an increase in the body temperature above normal. A low-grade fever is a mild elevation of the temperature above normal. Your temperature measurements fluctuate through the day and vary depending upon the site of measurement.
The Kingdom of France controlled the Louisiana territory from 1699 until it was ceded to Spain in 1762. Napoleon in 1800, hoping to re-establish an empire in North America, regained ownership of Louisiana.
In 1801, President Thomas Jefferson received word that Louisiana was about to be returned to French control. This was a matter of concern to the president. Spain was a declining power and offered no threat to the United States. Such was not the case with France under Napoleon.