The Hijrah is a significant event in the history of Islam in that it signified an important journey that Muhammad and his followers took in 622 CE. Fearing assassination Muhammad and his followers fled Medina and travelled north to the city of Yathrib. Here they established themselves and the city later became known as Medina Al-Nabi or "the City of the Prophet" and was eventually shortened to its current name just Medina. In Medina Muhammad and his followers suffered hardship to reestablish themselves and survive signifying an important step in the survival of the Islamic faith.
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When Europeans began to explore and colonize other parts of the world, smallpox traveled with them. The native people of the Americas, including the Aztecs, were especially vulnerable to smallpox because they'd never been exposed to the virus and thus possessed no natural immunity.
The main idea of the Mahabharata is to do good things to get a better karma.
I find the odd one is Zaire:it's not the name of a country, It used to be a name of a country, but since 1997 this country is called Democratic Republic of the Congo.
The best source of historical evidence to describe how an events unfolded would be a first person source, or a website ending in .edu
