Through most of its history, the US had heeded president George Washington's advice in his Farewell Address that the country remain neutral and avoid foreign entanglements. This strategy had worked successfully, allowing the US to quietly emerge as a powerful nation by the end of the 19th century.
is the process where a cell changes from one cell type to another.
On June 16, 1976 the Soweto Students Uprising began (Soweto is a neighborhood of Johannesburg). Around 20,000 students went to the streets and made a peaceful protest opposing to Afrikaan as the official language for instruction in schools. The government's responde was violence, killing hundreds of students, as a result, the revolt spread through the whole country and carried on until the following year. These events changed the socio-political landscape in South Africa which main problem was the Apartheid.
