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.
Asparagus dishes suited to serving as a side. Starting with the basics, the most obvious asparagus side dish is steamed asparagus with butter and a little seasoning. The simplicity of this dish makes it the first on my list for an easy but delicious side any day. Next up would be roasted, grilled or sauteed asparagus.