Orange-Cinnamon Bread

The cinnamon tree is native to Sri Lanka and to China, where it is called cassia. Long ago the bark was gathered in the wild by natives and sold to Arab seatraders. The strips of bark are dried in the sun, then rolled and further dried to the characteristic color. The first cinnamon plantation was planted in 1765 by the Dutch, producing enough cinnamon for kitchens around the world to have some cinnamon in them. This special sweet loaf is always exceptionally popular. Serve it plain, sprink