Question: Why were churches constructed in Norway 1,000 years ago?
About the article "Norway", section "Architecture".

Candidate passages:
With expansive forests, Norway has had a tradition of building in wood.
Many of today's most interesting new buildings are made of wood, reflecting the strong appeal that this material continues to hold for Norwegian designers and builders.
With Norway's conversion to Christianity some 1,000 years ago, churches were constructed.
Stonework architecture was introduced from Europe for the most important structures, beginning with the construction of Nidaros Cathedral in Trondheim.
In the early Middle Ages, wooden stave churches were constructed throughout Norway.
Many of them have survived and represent Norway's most unique contribution to architectural history.
A fine example is Urnes Stave Church, which is now on UNESCO's World Heritage List.
Another notable example of wooden architecture are buildings at the Bryggen Wharf in Bergen, consisting of a row of narrow wooden structures along the quayside.
In the 17th century, under the Danish monarchy, cities and villages such as Kongsberg and Røros were established.
The city had a church built in the Baroque style.
Traditional wooden buildings were constructed in Røros which have survived changes since then.
After Norway's union with Denmark was dissolved in 1814, Oslo became the capital.
The architect Christian H. Grosch designed the earliest parts of the University of Oslo, the Oslo Stock Exchange, and many other buildings and churches constructed in that early national period.
At the beginning of the 20th century, the city of Ålesund was rebuilt in the Art Nouveau style, influenced by styles of France.
The 1930s, when functionalism dominated, became a strong period for Norwegian architecture.
It is only since the late 20th century that Norwegian architects have achieved international renown.
One of the most striking modern buildings in Norway is the Sami Parliament in Kárášjohka, designed by Stein Halvorson and Christian Sundby.
Its debating chamber is an abstract timber version of a "lavvo," the traditional tent used by the nomadic Sami people.
The Church of Norway has 21 churches within the municipality of Trondheim.
They are all a part of the Diocese of Nidaros, which is based in Trondheim at the Nidaros Cathedral.
Many of the churches are several hundred years old, with a couple which were built almost 1000 years ago. 
Stave churches.
During the Middle Ages all wooden churches in Norway (about 1,000 in total) were constructed as stave churches, with only 271 masonry constructions.
From the stave church period a small number of monumental buildings have survived, including important cultural heritage such as Borgund stave church, Urnes stave church and Hopperstad stave church.
The exact origin of the stave churches remains a matter of debate and research.
The "basilica theory" proposes that the Norwegian stave churches are Romanesque basilica form adapted to wood construction.
Anker believes that the influence from foreign stone architecture is primarily found in decorative details.
The most basic layout, the long church design with a rectangular nave and separate chancel, is found in for instance Haltdalen Stave Church.
Muri in 1975 made a survey of existing "old churches" (built until the Second World War) and reported the following statistics of floor plans, number of perished/demolished buildings included in table (categories are not mutually exclusive):aWhen stave churches and medieval stone churches are included the total number is about 1040. 
In 1874, the Sicklerville Post Office was established.
Paul H. Sickler (his descendants still live in Winslow Township) was appointed the first Postmaster.
Today, the Post Office is located near the original location on Sicklerville Road.
The post office also services contiguous addresses in portions of Gloucester Township and Washington Township.
Sicklerville was originally founded as "Sickler Town".
In 1886, there were only ten residences in "Sicklerville".
There are eight places of worship in Sicklerville: Two Baptist Churches The Sicklerville Methodist Episcopal (oldest Church, constructed over 131 years ago) One other Methodist Church Two Catholic Churches - St. John Neumann, St. Charles Borromeo R.S.
Fink Shrine (second oldest Church, constructed over 127 years ago) Iglesia ni Cristo Church  
In 2008, the remains of at least 25 miniature humans, who lived between 1,000 and 3,000 years ago, were found on the islands of Palau in Micronesia.