Past
Present
Changes
100
They used this animal to pull wagons.
Horse
100
he most common 4-wheeled vehicle today.
Car
100
Before cars, people used a horse and ______.
Carriage
200
This round invention made carts move.
The wheel
200
It flies people across the world.
Airplane
200
To go to space now, we use a ______.
Rocket
300
Ships used these to move with the wind.
Sails
300
High-speed transport that runs on tracks.
Bullet Train
300
Old trains used steam; new trains use ______.
Electricity