Two units (equivalent to two years or four semesters) of laboratory science are required (three units are strongly recommended), providing fundamental knowledge in two of the following disciplines: 1  Biology. 2  Chemistry. 3  Physics.
Slave forts were established all along the coast of West Africa, to house captured Africans in holding pens (barracoons) awaiting transport. They were equipped with up to a hundred guns and cannons to defend European interests on the coast, by keeping competitors at bay. There were approximately 80 castles dotted along the slave-trading coast.
1590s, from Middle French barricader to barricade (1550s), from barrique barrel, from Spanish barrica barrel, from baril (see barrel). Revolutionary associations began during 1588 Huguenot riots in Paris, when large barrels filled with earth and stones were set up in the streets.