A
Animals Artists
B
Billionaires
C
Cars Charts
D
Deodorants Dinosaurs
E
Ecosystems Elements Empires Engines Explorers
F
Football
G
Galaxies Games Gemstones Gods Guitars
H
Helicopters Herbs Heroes Holidays Horses
I
Insects Instruments Inventions Islands Italian Foods
J
Japanese Foods Jets Journalists Juices Jungles
K
Keyboards Kings Knights Knives Korean Foods
L
Lakes Landmarks Languages Libraries Lighthouses
M
Musicians
N
News
O
Oceans Olympic Sports Operas Ores Organs
P
Paintings Philosophers Planets Programming Languages Pyramids
Q
Quadcopters Quakes Quarterbacks Queens Quiz Shows
R
Razors Reptiles Rivers Robots Rockets Rollercoasters
S
Shampoos Soap & Body Wash Stocks
T
Toothbrushes Toothpastes Trending
U
Underground Railways Universities Uprisings US States Utensils
V
Vacuums Valleys Vegetables Vikings Vitamins Volcanoes
W
Watches Waterfalls Whales Wines Wonders
X
X Games Sports Xbox Consoles
Y
Yachts Yoga Poses
Z
Zebras Zeppelins Zodiac Signs Zombie Films Zoos

#5 Invention

Magnetic Compass

Navigation
Song dynasty China
11th century
Enabled reliable navigation and the great age of maritime exploration.

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