181 Cholera: An infectious and often fatal bacterial disease of the small intestines, usually contracted from infected water causing severe vomiting and diarrhea
182 Measles: An infectious viral disease causing a fever and red rash, most often in children
183 Trail of Tears: 17,000 Cherokee Indians were forced from their home and marched by troops to their new territory. 4,000 die along the way.
184 Louisiana Purchase: Purchase of land beyond the Mississippi to the Rocky Mts. and the port of New Orleans from France for 15 million in 1803.
185 Gadsden Purchase: Purchase of land between the newly acquired lands of the Southwest and Mexico after the Mexican-American War for 10 million in 1853.
186 Annex: To add territory to a country. An addition of land.
187 Treaty of Guadalupe Hidalgo: Treaty where Mexico agreed to give up Texas and a vast area in the Southwest known as the Mexican cession in 1848.
188 Cession: To give up something
189 Emigrant: A person who leaves their home for a new place, specifically an area that is undeveloped
190 Missionary: A person sent by a religious group to spread their religion. Often Christians.
191 Mormon: Members of the Church of Jesus Christ of Latter-Day Saints founded by Joseph Smith in 1830.