Mayan – rubberv
Explanation: The Mayan people were robust users of rubber with it they made sandals, rubber bands
and also balls and used to play a ceremonial game in stone-walled courts. In the present, rubber was
used and built in variety of forms such as sandals, shoes, wheels for vehicles, machines and others that
use for daily activities in work and home
Inca – road with paved stones
Explanation: Inca built road with paved stones stones because high altitudes they paved the way with
local stone to protect the surface from ice and snowmelt, and when they needed supporting walls they
left holes for the water to drain. Through their invention, some countries use paved stones in road
Aztec – cacao beans - Aztecs used cocoa beans as currency becauseThey believed that chocolate was a
gift from the god Quetzalcoatl, and drank it as a refreshing beverage, an aphrodisiac, and even to
prepare for war. Therefore, in the present cacao beans have variety uses such as used to manufacture
chocolates, beverages, ice creams, and desserts and others.
India – Iron – The invention of iron in the metallurgy was occur in 1300- 1000 BCE. Through their
invention of iron, it have variety of uses in the present such as building for machinery and tools, as well
as vehicles, hulls of ships, structural elements for buildings, bridges and aircraft.
China – gunpowder – In ancient china, Chinese learned about charcoal when firing pottery and used it as
a fuel and medicine later on use to build explosives. Through their inventions, gunpowder use it in the
present as for ignition charges, primers, fuses, and blank-fire charges in military ammunition and others.
Africa – metal tools – African people uses metals tools for homes, agriculture, and architecture. Through
their inventions, many metals tools evolve in every specific field of area such as agriculture, machines,
buildings and others
Egypt – Bread– According to history, the earliest bread was made in or around 8000 BC in the Middle
East, specifically Egypt. Through their scientific contribution, it spread all over the world with different
type of bread that leads of building bakery around world.