The helicopter, scuba and space travel,

The bow and arrow, gun and atomic bomb,

Anesthesia, antibiotics and organ transplants,

The telescope, x-ray and electron microscope,

Trains, cars and airplanes,

The seismograph, radar and satellite,

Skydiving, mountaineering, and running,

Fire, matches and dynamite,

Three manmade marvels: the Great Pyramid, the Moai and the Burj Khalifa,

City makers: skyscrapers, subways and city parks,

The control of nature: dams, highways and canals,

The horse, bicycle and motorcycle,

Samurai, knights and special forces,

Tank, combat aircraft and military drone,

Writing, libraries and internet,

Monarchy, democracy and communism,

Submarines, battleships and armadas,

Painting, photography and motion pictures,

Dentists, eye doctors and psychology and psychiatry,

Gods, ghosts and ufo's,

Plagues, economic collapse and nuclear war,

Fishing, farming and animal farms,

Firefighters, police and paramedics,

Crimes, courts and prisons,

Exploration, mapping and exploring space,

Mining, steel and oil,