The

metric

system

In

1791,

the

French

created

a

new

way

of

measuring

called

the

metric

system.

The

word

‘metric’

is

Greek

for

‘measure’.

The

metric

system

is

based

on

units

of

10.

All

the

units

are

related

to

each

other.

This

makes

it

easy

for

people

to

change

from

one

metric

unit

to

another.

At

first,

many

French

people

did

not

use

the

metric

system

because

they

were

not

used

to

it.

However,

in

1840,

France

made

a

law

that

required

everyone

to

use

it.

Over

the

next

hundred

years,

most

countries

switched

to

the

metric

system.