Sphenoid sinuses â behind the ethmoids in the upper region of the nose and behind the eyes. Each sinus has an opening into the nose for the free exchange of air and mucus, and each is joined with the nasal passages by a continuous mucous membrane lining.Therefore, anything that causes a swelling in the nose-an infection, an allergic reaction, or an immune reaction-also can affect the sinuses.inusitis is an acute or chronic inflammation of the nasal sinuses. Health care experts usually divide sinusitis cases into three categories based on the duration and frequency of occurrence.
President Thomas Jefferson commissioned the Corps of Discovery Expedition (1804-06), led by Meriwether Lewis and William Clark, to explore the territory acquired in the Louisiana Purchase, among other objectives. In 1801, Spain signed a secret treaty with France to return Louisiana Territory to France.
Louisiana Purchase The Louisiana Purchase Timeline 1763: France gave Louisiana to Spain. March 1801: Napoleon wanted a French empire in North America. So, under pressure, Spain returned Louisiana to France.Federalists in the United States were alarmed that France now owned Louisiana. They wanted to use force against France. But Jefferson (a Democratic-Repulican) sent Robert R. Livingston, the U.S. minister to France to attempt to buy New Orleans.ederalists in the United States were alarmed that France now owned Louisiana. They wanted to use force against France. But Jefferson (a Democratic-Repulican) sent Robert R. Livingston, the U.S. minister to France to attempt to buy New Orleans.