The line graphs lower depicts the changing of population in the period from 1940 to 2000 in three different counties in the U.S. state of Oregon.

The curve lower depicts the changing of

population

in the period from 1940 to 2000 in three different counties in the U.S. state of Oregon. In 1940,

Columbia

had the lowest

population

of the three territories, which consisted

by

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of

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approximately 25 000.

This

compared with 75 000

inhabitans

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inhabitants

of Washington was triple what it

has

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had

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been in

Columbia

,

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in, same

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same

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the same

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year.

Also

, the graph showed a third Yamhill

county

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County

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,

where

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which

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has

Wrong verb form

had

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occupied

Verb problem

apply

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30 000

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30,000

citizens in 1940. In the years 1940-1970, there was

steady

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a steady

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rise in the number of Yamhill`s residents from 30 000 to 45 000,

similarly

, there has been

gradual

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a gradual

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increase in the

population

of

Columbia

at around 50%.

By contrast

, Washington`s demography climbed sharply from

75 000

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75,000

to more than

120 000

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120,000

occupants between 1940 and 1970. By 2000, for the

population

of

Columbia

and Yamhill counties trend was still upward, and

then

there was a sharp climb for both of them.

Columbia

`s

population

increased considerably from

45 000

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45,000

to

90 000

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90,000

.