What is associated with: 1849s the emigrants guide to california says the biggest travel expense was 8 of these yoke not included?

What is associated with: 1848 the treaty of guadalupe hidalgo is signed ending this war? What is associated with: 1848s treaty of guadalupe hidalgo ending this war added over 500000 square miles to the us? What is associated with: 1849 the former elizabeth barrett? What is associated with: 1849 work in which thoreau asked unjust laws exist shall we be content to obey them? What is associated with: 1850 wagner opera in which youd hear farewell farewell my beloved swan? What is associated with: 1850 work that features the piece heard here? What is associated with: 1850s tolstoy novels included childhood boyhood this which proverbially is wasted on the young? What is associated with: 1851 a white whale?