What is the type of the next? TRANSPORTATION: A Brief History
were
1.
The invention of the wheel was the first big
advance in land transport which has given man
great facility of movement. Before wheels
invented people used to
walk, travel
Con horseback,
or drag heavy loads on sledges. The first wheels
were probably flat and circular pieces of wood. The
first vehicles with wheels were rough
uncomfortable, but during the 1800s horsedrawn
coaches or jigs were more comfortable. However,
travel was still very slow: a journey of 100
kilometers could take up to two days.
Mrough and
2
to
use oars
At about the same time as the wheel was
invented, people found a
a way to
to make
their boats travel faster. (They used sails to make
the wind carry them along. Before this, they had
to push their boats through the
water. A number of inventions which were made
for maritimer transportation in the
the twentieth
century were combined to greatly reduce the
cost and the overall time of transport services
across the oceans. Today, we have huge ships
built of iron and powered by steam turbines,
diesel engines, or even nuclear-powered frigates
and submarines.
.
from 701 21500 Nicolas Lugnot invent
3 It
During the 18th century, an important invention
made
steam engine. In 1769, a Frenchman named Nicholas
Cugnot built a strange-looking tractor powered
by a steam engine. It was heavy and clumsy, but
could travel at a speed of 5 km an hour. Steam
engines were best suited for railway locomotives.
By the middle of the 1800s, people were
traveling between cities on the first railway
lines. At present,
trains, such
undergrounds, trolley buses, or
electric
locomotives, use electric power supplied from
overhead cables or from an extra rail on the
ground​