One third of the world's bauxite is in Guinea.

a. True

b. False

True.

Explanation:

The largest reserves of bauxite s found in Guinea. Bauxite is a mineral which is used in the production of aluminium. Boké, Boffa and Kindia Fria in the area called the Lower Guinea, Pita, Tougué, Dalaba and Mamou in Middle Guinea and Dabola, Siguiri and Dinguiraye in Upper Guinea are some of the areas rich in bauxite.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers

its many islands, high mountains, and remote peninsulas isolated population centers.