Dagen H (September 3, 1967) marked the day when Sweden joined most of Western Europe and started driving on the right-hand side of the road.
Photograph by Winfield Parks, National Geographic
to change or modify something to fit with something else.
activities designed to achieve a social, political, or military goal.
to build or erect.
person who plans the building of things, such as structures (construction engineer) or substances (chemical engineer).
to bring in a good or service from another area for trade.
structures and facilities necessary for the functioning of a society, such as roads.
to make or produce a good, usually for sale.
very large or heavy.
political unit made of people who share a common territory.
the art, science, and business of promoting an organization, person, or event.
rule or law.
movement of many things, often vehicles, in a specific area.
device used for transportation.