But to answer your afrocentric question, the different empires each had their own established slave networks and infrastructure in Africa (logistics as has already been stated), see: 1  Arab slave trade. 2  Barbary slave trade. 3  Slavery in the Ottoman Empire.
Asparagus is a vegetable belonging to the lily family, which also includes onions, leeks and garlic. Eat asparagus as part of a heart-healthy diet, as it contains no fat, no cholesterol and very little sodium.
Raw asparagus is another great source of prebiotics, as it contains 5 percent fiber by weight. For many, raw asparagus is tough to eat, but a wonderfully tasty, and less tough, way is to eat this prebiotic food source is to ferment it. Alternatively, you could try blending raw asparagus into a smoothie.