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Railroad
Railroads replace canals as a primary mode of transportation. -
Stapler
The stapler is a mechanical device that joins pages of paper or similar material by driving a thin metal staple through the sheets -
Fax machine
is to scanned printed material . -
Safety pin
Safety pins were used for different occasions , like putting clothes together or used for babepy diapers . -
Telephone
For faster communication . -
Paper Clip
This is important becuase it used to hold papers together .
