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.
Cook asparagus in a skillet with a small amount of water over medium heat until crisp and tender, about 6 to 8 minutes; drain and sprinkle with lemon juice. Flatten bread slices with a rolling pin. Stir cream cheese, crumbled bacon, and chives together in a small bowl until evenly mixed. Spread 1 tablespoon of the cream cheese mixture onto each slice of bread and top with an asparagus spear. Roll the bread tightly around the asparagus; arrange onto prepared baking sheet with seam side down. Brush the tops of the rolls with melted butter and sprinkle with Parmesan cheese.