Group+6-3

16. Chess
 * 1) Hospitals because we need care if we are unhealthy or injured.
 * 2) Astronomy Because we want to know what time and day it is and will be.
 * 3) Irrigation techniques and underground wells for getting water to everyone so we can stay alive and have plants that provide produce.
 * 4) Banking Systems
 * 5) Herbal medicines and pharmicies
 * 6) House of wisdom
 * 7) Algebra
 * 8) Book Making
 * 9) Libraries of Cordoba
 * 10) Calligraphy
 * 11) Zoology
 * 12) Geometric and floral designs
 * 13) Polo
 * 14) Music of Andulusia
 * 15) City of Baghdad