POD: The US decides to "go homogeneous" after independence, abolishing slavery and using white Anglo-Saxon labor instead. The shortage of labor in the cotton belt (and in other flat, fertile areas) results n it turning first to prison labor and later conscripting the sons of white families who can't pay a massive fee to the treasury instead as well as encouraging high fertility and mass immigration from Europe, to the point that it literally buys white criminals from Britain and the German states as if they were chattel slaves. This horrifies even many moderate slaveowners (like Jefferson) who, while considering black slavery a necessary evil, are horrified at the idea of the government restarting the slave trade and kidnapping freeborn children. As in OTL, Jefferson isn't good with money, and when he realizes that the poor financial state of Monticello could mean that his children and grandchildren might be enslaved, his family flees to South Liberia, which was established for the black population of the Thirteen Colonies. Many other white intelligentsia flee too, with most staying in the temperate area of New Virginia (OTL Namibia) as well as along the coastal strip of New Georgia (OTL Liberia) and New Freeport (OTL Sierra Leone). The massive emigration from the US results in a much earlier Scramble for Africa, which by 1875 (see map above) is divided among Britain, France, Portugal, and Liberia, the latter rapidly earning acceptance as a great power. Indeed, Liberia now controls either directly (as the three states of New Virginia, New Georgia, and New Freeport or as the territories of Limpopo, Liberian Congo, Liberian West Africa, and Liberian Calabar) or indirectly (it has earned the loyalty of almost a dozen native states who have pledged not to favor a European empire over it). At the same time, the massive white emigration to feed King Cotton and the Breadbasket of the World has resulted in Poland falling to Russian, not German, domination and has resulted in both a slower expansion of Brazil into the Amazon and a number of indirectly ruled states (a Polynesian confederation loyal to Queen Victoria now controls the southern island of New Zealand and the massive Métis Nation is semi-autonomous, as is Lapland in Scandinavia). Conversely, most of Australia is still composed of minimally organized territories. The most interesting events of the past two decades have been the American purchase of Hawaii (in exchange for the Hawaiians getting a hefty sum of money that's allowed them all to emigrate to the Polynesian Confederation of South Aotearoa) and the ongoing American-Canadian border war driven by American farm settlers attempting to take over the Canadian prairies. Note: this is moderately ASB with rule of cool in effect, and you likely will have Liberia occupying territory on Continental Europe soon enough.