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| 7682147743 | Opium War | A war between China and Britain that resulted in Britain's right to sell opium in China, causing the US to want to catch up in the Pacific market | 0 | |
| 7682147744 | Treaty of Wanghia | The first formal diplomatic agreement between the US and China, it gave the US "most favored nation" status in China, granting them any trading rights. | 1 | |
| 7682147747 | Treaty of Kanagawa | American treaty with Japan that cracked their isolationism of several centuries. | 2 | |
| 7682147748 | Gadsden Purchase | Cession of land by Mexico to the US for $10 million that provided a viable railroad rout from Houston to Los Angeles | 3 | |
| 7682147749 | Kansas-Nebraska Act | Set forth in 1854, said that Kansas and Nebraska should come into the Union under popular sovereignty. This new law repealed the Missouri Compromise. Senator Stephen A. Douglas introduced it, and it pushed the country even closer to the Civil War by muddling the slavery issue. | 4 | |
| 7682174448 | Free-Soil Party | Was organized by anti-slavery men in the north, Democrats who were resentful of Polk's actions, and some conscientious Whigs. Was against slavery in the new territories. Foreshadowed the emergence of the Republican Party. | 5 | |
| 7682231206 | Fugitive Slave Law | Was passed just before the Civil War and also called the "Bloodhound Bill." Slaves who escaped could not testify in their behalf and were not allowed a trial by jury. Officers were expected to help catch runaway slaves. Those found helping slaves would be fined or jailed. | 6 | |
| 7682244490 | Underground Railroad | Was a secret chain of anti-slavery homes at which slaves were hidden and taken to the North. | 7 | |
| 7682252737 | Compromise of 1850 | Dealt with the controversy of whether California should join as a free state. The results were that California joined as a free state, and what was left of the Mexican Cession land became New Mexico and Utah, and did not restrict slavery. The South got the Mexican Cession lands opened to popular sovereignty and a tougher Fugitive Slave Law. | 8 | |
| 7682265378 | Ostend Manifesto | Took place in 1854. A group of Southerners met with Spanish officials in Belgium to attempt to get more slave territory. They felt this would balance out Congress. They tried to buy Cuba but the Spanish would not sell it. Southerners wanted to take it by force and the Northerners were outraged by the thought of expanding slavery. The scheme fell apart when the plan went public. | 9 | |
| 7682328498 | Clayton-Bulwer Treaty | The 1850 treaty that prevented both the US and Britain from seeking complete control of the Central American isthmus | 10 |
