Question: Construction began at Disneyland in what year?
About the article "Disneyland", section "Abstract".

Candidate passages:
Concept and construction.
The concept of an amusement parK in began with the 300th year anniversary of the recorded founding of Kolkata (then Calcutta).
While planning was under way for the tricentennial celebrations by the ruling State Government, Rajive Kaul, currently Chairman of Nicco Group, was in the US on a family holiday to Disneyland.
As per the story, when Kaul returned, there was an inquiry as to why he left for America when he was very much required back home for the planning process.
Supposedly, Rajive replied, "I'd gone to see if I could create a Disneyland here."
What at first seemed to be just an excuse to justify his absence actually materialised to a joint venture with the West Bengal government. 
  2000 – Disney's Paradise Pier Hotel opens at the Disneyland Resort on December 15.
2001 – Disney's Grand Californian Hotel & Spa opens at the Disneyland Resort on January 2.
Downtown Disney opens at the Disneyland Resort on January 12.
Disney California Adventure Park opens at the Disneyland Resort on February 8.
Tokyo DisneySea opens at Tokyo Disney Resort on September 4.
River Country closes on November 2.
"100 Years of Magic" Celebration begins to commemorate Walt Disney's 100th Birthday.
2002 – Walt Disney Studios Park opens March 16 as the second theme park at the renamed Disneyland Resort Paris.
The first park is renamed Disneyland Park.
2003 – Construction on Hong Kong Disneyland begins.
"100 Years of Magic" Celebration ends and "Where Magic Lives" campaign begins.
2004 - In Disney's California Adventure Park, The Twilight Zone Tower of Terror had been opened in May 5.
2005 – "Where Magic Lives" campaign ends.
Disneyland celebrates its 50th anniversary as part of a worldwide jubilee among all Disney's theme parks worldwide; Hong Kong Disneyland Resort opens September 12 on Lantau Island, Hong Kong;   2006 – The Happiest Homecoming on Earth ends, and the Year of a Million Dreams promotional period at Disneyland and Walt Disney World begins.
2007 – The Year of a Million Dreams promotion is extended another year.
A $1 billion expansion/renovation of Disney California Adventure Park is announced to be completed by 2012.
Disneyland Resort Paris celebrates its 15th anniversary.
Finding Nemo Submarine Voyage opens at Disneyland Park on June 11.
2008 – Disneyland Resort Paris' 15th birthday is extended and Tokyo Disney Resort celebrates its 25th anniversary.
Walt Disney World's Disney-MGM Studios is renamed Disney's Hollywood Studios.
Two new cruise ships are announced for the Disney Cruise Line.
2009 – Year of a Million Dreams ends and What Will You Celebrate?
promotion begins at Disneyland and Walt Disney World.
Disney announces a new resort, Shanghai Disneyland, expected to open in 2016 on the Chinese mainland, and announces that the Disney Cruise Line's new ships will be called Disney Dream and Disney Fantasy.
Disney lays off 1,500 cast members.
Disney announces plans for a Fantasyland expansion for Walt Disney World's Magic Kingdom to begin construction January 2010 and finish in phases.
Phase 1 is completed in 2012, while Phase 2 is to be completed in 2013.  
  1965 – Plans for the Florida Project (what would become Walt Disney World) are released to the public in November.
1966 – It's a Small World opens at Disneyland on May 28.
New Orleans Square opens at Disneyland on July 24.
Walt Disney dies on December 15.
1967 – Construction on Walt Disney World begins.
1969 – The Haunted Mansion opens at Disneyland on August 9.  
In April 1979, the first basic contract for the construction of Disneyland in Tokyo was signed.
Japanese engineers and architects flocked to California to tour Disneyland and prepare to construct the new operating dreamland in Tokyo.
Just one year later, construction of the park began and was covered by hundreds of media reporters as an indication of the high expectations for the park in the future.
Though successful in the building process, the final cost of Disneyland Tokyo almost doubled the estimated budget costing 180 billion yen rather than the projected 100 billion yen.
Despite this discrepancy, Disneyland Tokyo has been a constant source of pride since opening day over 30 years ago. 
Most construction was completed by early 2001, and Disney's California Adventure Park held "preview" openings in January 2001.
Word of mouth reviews from Disney employees, annual pass holders, and American Express cardholders were largely negative.
It opened to the public amid much fanfare on February 8, 2001, though the reviews impacted attendance and the company's initial attendance projections for the park were never met.
Much of the park's early years were spent attempting to boost attendance.
In the short-term, Disney brought the venerable Main Street Electrical Parade to the park, added Who Wants To Be A Millionaire - Play It!, and offered discounted admission and other promotions aimed at boosting attendance.
Long-term projects to address the park's early criticisms have included the addition of a bug's land to add attractions geared towards children, and The Twilight Zone Tower of Terror as another E ticket.
Some of the park's oft-criticized early attractions were closed within the first year of operation, including Superstar Limo, "Disney's Steps in Time", and "Disney's Eureka!
– A California Parade".
After the park's opening, new attractions began appearing at Disneyland Park, including The Many Adventures of Winnie the Pooh and Buzz Lightyear Astro Blasters; both were modeled after similarly named attractions at the Magic Kingdom.
The original park saw a substantial renovation of the nearly 30-year-old (at the time) Space Mountain, the return of Submarine Voyage as the Finding Nemo Submarine Voyage, and the introduction of new trains to the Disneyland Monorail System.
In 2007, Pirates of the Caribbean was refurbished to bring its look closer to that of the film franchise.
The resort celebrated the 50th anniversary of Disneyland Park from 2005 to 2006 in an 18-month celebration known as the Happiest Homecoming on Earth, part of the larger Happiest Celebration on Earth promotion at all Disney theme parks.
It was succeeded by the Year of a Million Dreams promotion, running from 2006 through 2008.
The next promotion, What Will You Celebrate?, began January 1, 2009, and offered free admission to visitors on their birthday in 2009.
Disney kept this marketing theme in 2010 for its American parks, but no longer offers free admission on a guests birthday.
In 2007, Disney announced a US$1.1 billion expansion project for Disney's California Adventure Park, including construction of a new land based on the Disney-Pixar film "Cars", a new evening water show—Disney's World of Color, as well as substantially re-theming and adding new attractions to existing areas.
Construction began in 2008, and was completed in phases from 2010 to 2012.
Disney's Grand Californian Hotel completed an expansion to add Disney Vacation Club suites, while the Disneyland Hotel started an extensive renovation in the summer of 2009 and completed in 2012.
In early 2010, the park was renamed Disney California Adventure.
The expansion of Disneyland into the Disneyland Resort later had a similar effect on its sister properties in Japan and France, both of which also were single parks.
In 2001, Tokyo Disneyland became Tokyo Disney Resort with the addition of Tokyo DisneySea.
The following year, Disneyland Park Paris became Disneyland Resort Paris with the addition of Walt Disney Studios Paris.