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###Input: The merger between ABC and Capital Cities received federal approval on September 5, 1985. After the ABC/Capital Cities merger was finalized on January 3, 1986, the combined company – which became known as Capital Cities/ABC, Inc. – added four television stations (WPVI-TV/Philadelphia, KTRK-TV/Houston, KFSN-TV/Fresno and WTVD/Raleigh) and several radio stations to ABC's broadcasting portfolio, and also included Fairchild Publications and four newspapers (including The Kansas City Star and Fort Worth Star-Telegram). It also initiated several changes in its management: Frederick S. Pierce was named president of ABC's broadcasting division; Michael P. Millardi became vice president of ABC Broadcasting, and president of ABC Owned Stations and ABC Video Enterprises; John B. Sias was appointed president of the ABC Television Network; Brandon Stoddard became president of ABC Entertainment (a position to which he had been appointed in November 1985); and Roone Arledge became president of ABC News and ABC Sports. In February 1986, Thomas S. Murphy, who had been serving as CEO of Capital Cities since 1964, was appointed chairman and CEO emeritus of ABC. Jim Duffy stepped down as ABC Television president for a management position at ABC Communications, a subsidiary that specialized in community service programming, including shows related to literary education.

As far as programming is concerned, four of ABC's marquee shows of the 1970s ended their runs during the mid-1980s: Laverne & Shirley ended its run in 1983, Happy Days and Three's Company ended in 1984 (with the latter producing a short-lived spinoff that year), while The Love Boat ended its run in 1986. After nearly a decade of ratings trouble, NBC had regained the ratings lead among the Big Three networks in 1984 on the success of series such as The Cosby Show, Cheers and Miami Vice. To counteract NBC, ABC decided to refocus itself on comedies and family-oriented series beginning in the mid-1980s including Mr. Belvedere, Roseanne, Who's the Boss?, Just the Ten of Us, The Wonder Years, Full House and Perfect Strangers.

Following the initial success of these series, ABC revamped its Friday night schedule around family-friendly comedies in the late 1980s, culminating in the 1989 debut of the "TGIF" block (which promotions referenced stood for "Thank Goodness It's Funny"). Many of the series featured during the run of the block were produced by Miller-Boyett Productions, a Warner Bros.-based studio that briefly programmed the entire Friday lineup during the 1990–91 season (with Going Places joining Family Matters, Full House and Perfect Strangers on the "TGIF" schedule) and through its development deal with Paramount Television prior to 1986 (as Miller-Milkis, and later, Miller-Milkis-Boyett Productions), had earlier produced Happy Days and its various spinoffs among other series for the network.

In 1968, ABC took advantage of new FCC ownership regulations that allowed broadcasting companies to own a maximum of seven radio stations nationwide in order to purchase Houston radio stations KXYZ and KXYZ-FM for $1 million in shares and $1.5 million in bonds. That year, Roone Arledge was named president of ABC Sports; the company also founded ABC Pictures, a film production company which released its first picture that year, the Ralph Nelson-directed Charly. It was renamed ABC Motion Pictures in 1979; the unit was dissolved in 1985. The studio also operated two subsidiaries, Palomar Pictures International and Selmur Pictures. In July 1968, ABC continued its acquisitions in the amusement parks sector with the opening of ABC Marine World in Redwood City, California; that park was sold in 1972 and demolished in 1986, with the land that occupied the park later becoming home to the headquarters of Oracle Corporation.

It was not until the late 1950s that the ABC network became a serious contender to NBC and CBS, and this was in large part due to the diverse range of programming that met the expectations of the public, such as westerns and detective series. Despite an almost 500% increase in advertising revenues between 1953 and 1958, the network only had a national reach of between 10% and 18% of the total U.S. population, as it still had relatively fewer affiliates than NBC and CBS. In 1957, ABC Entertainment president Ollie Treiz discovered that the locally produced variety show Bandstand had pulled very strong ratings in the Philadelphia market on WFIL-TV; Treiz ultimately negotiated a deal to take the show national, under the revised title American Bandstand; the show quickly became a social phenomenon by presenting new musical talent and dances to America's youth and helped make a star out of its host, Dick Clark.



###Question: What kind of programs can be credited for ABC's success in the late 1950s?

###Answer: {'answer':'westerns and detective series'}