My answer would be fertile soil.
Slavery has historically been widespread in Africa, and still continues today in some countries.
Systems of servitude and slavery were common in parts of Africa, as they were in much of the ancient world. In many African societies where slavery was prevalent, the enslaved people were not treated as chattel slaves and were given certain rights in a system similar to indentured servitude elsewhere in the world.[citation needed] When the Arab slave trade and Atlantic slave trade began, many of the local slave systems began supplying captives for slave markets outside Africa.
Slavery in historical Africa was practiced in many different forms: Debt slavery, enslavement of war captives, military slavery, slavery for prostitution and criminal slavery were all practiced in various parts of Africa. Slavery for domestic and court purposes was widespread throughout Africa. Plantation slavery also occurred primarily on the eastern coast of Africa and in parts of West Africa. The importance of domestic plantation slavery increased during the 19th century due to the abolition of the Atlantic slave trade. Many African states dependent on the international slave trade reoriented their economies towards legitimate commerce worked by slave labor.
Historian Frederick Merk says this concept was born out of "a sense of mission to redeem the Old World by high example ... generated by the potentialities of a new earth for building a new heaven".[4]
Historians have emphasized that "manifest destiny" was a contested concept—pre-civil war Democrats endorsed the idea but many prominent Americans (such as Abraham Lincoln, Ulysses S. Grant, and most Whigs) rejected it. Historian Daniel Walker Howe writes, "American imperialism did not represent an American consensus; it provoked bitter dissent within the national polity ... Whigs saw America's moral mission as one of democratic example rather than one of conquest."[5]
Newspaper editor John O'Sullivan is generally credited with coining the term manifest destiny in 1845 to describe the essence of this mindset, which was a rhetorical tone;[6] however, the unsigned editorial titled "Annexation" in which it first appeared was arguably written by journalist and annexation advocate Jane Cazneau.[7] The term was used by Democrats in the 1840s to justify the war with Mexico and it was also used to divide half of Oregon with the United Kingdom. But manifest destiny always limped along because of its internal limitations and the issue of slavery, says Merk. It never became a national priority. By 1843 John Quincy Adams, originally a major supporter of the concept underlying manifest destiny, had changed his mind and repudiated expansionism because it meant the expansion of slavery in Texas.
<span>Russian Revolution was comprised of two smaller revolutions, the first of which led to the overthrowing of Nicholas II, the last Russian czar, and the second of which was led by Vladimir Lenin and the Bolsheviks. The Bolsheviks were a radical group of far-left revolutionaries who wished to instill Marxism in Russia.
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I believe that is the Filipinos and china
