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.
1 Snap off the dry ends of the asparagus. Heat the oven to 425Â°F. Snap off the woody ends of the asparagus and discard.  Drizzle with olive oil. Spread the asparagus in a single layer on a baking sheet and drizzle lightly with olive oil.