Answer the question at the end by quoting:

Maines was born in Lubbock, Texas, to country musician and producer Lloyd Maines and his wife Tina May Maines. She attended Williams Elementary School in Lubbock where her second grade teacher recalls being told by Maines during a math lesson, "Teacher, I don't need to learn this stuff--I'm gonna be a star." Maines was a cheerleader while attending O. L. Slaton Junior High School, and graduated in 1992 from Lubbock High School where she had participated in the school choir. Maines has described growing up in conservative Texas, saying "I always rebelled against that.
Maines had a public feud with fellow country music star Toby Keith over the 2002 chart-topping country hit "Courtesy of the Red, White and Blue", as well as a comment Maines made about U.S. President George W. Bush during a March 2003 Dixie Chicks concert in London. Maines publicly criticized Keith's song "Courtesy of the Red, White and Blue" by saying, "I hate it. It's ignorant, and it makes country music sound ignorant. It targets an entire culture--and not just the bad people who did bad things. You've got to have some tact. Anybody can write, 'We'll put a boot in your ass.'" Keith responded by belittling Maines's songwriting skills with, "I'll bury her. She has never written anything that has been a hit" and, "That's what I do--I write songs." Keith further stated, "she said anyone can write 'We'll put a boot in your ass', but, you know ... she didn't." After Maines commented at a March 2003 Dixie Chicks concert at the Shepherd's Bush Empire theatre in London that the Chicks didn't want the Iraq War and were "ashamed" President Bush "was from Texas", Keith's 2003 "Shock'n Y'all" tour began displaying a backdrop showing a doctored photo of Maines with Iraqi dictator Saddam Hussein. Shortly thereafter, on May 21, 2003, Maines wore a T-shirt with the letters "F.U.T.K." written on the front while performing for the Academy of Country Music Awards broadcast. The Dixie Chicks website stated that the letters stood for "Freedom, United, Together in Kindness." Some saw it as a veiled insult directed at Keith. In August 2003, Keith publicly declared that he was done feuding with Maines, explaining, "You know, a best friend of mine ... lost a two-year-old daughter to cancer. ... [Recently] I saw ... a picture of me and Natalie and it said, 'Fight to the Death' or something. It seemed so insignificant. I said, 'Enough is enough.' ... People try to make everything black and white. I didn't start this battle. They started it with me; they came out and just tore me up. One thing I've never, ever done, out of jealousy or anything else, is to bash another artist and their artistic license." In the 2006 documentary Dixie Chicks: Shut Up and Sing, backstage footage prior to her appearance wearing the F.U.T.K. shirt recorded the conversation between Maines and Simon Renshaw and confirmed that the original intent of the shirt was, in fact, a shot at Keith in response to his criticism of her: the letters stood for "Fuck You Toby Keith". As of January 2007, Keith continues to refuse to say Maines's name and argues that the doctored photo was intended to express his feeling that Maines's criticism was tyrannical and a dictator-like attempt to squelch Keith's free speech.

Are they still feuding to this day?

In August 2003, Keith publicly declared that he was done feuding with Maines,

IN: The Grand Ole Opry is a weekly country-music stage concert in Nashville, Tennessee, which was founded on November 28, 1925, by George D. Hay as a one-hour radio "barn dance" on WSM. Currently owned and operated by Opry Entertainment (a division of Ryman Hospitality Properties, Inc.), it is the longest-running radio broadcast in US history. Dedicated to honoring country music and its history, the Opry showcases a mix of famous singers and contemporary chart-toppers performing country, bluegrass, Americana, folk, gospel, and comedic performances and skits. It attracts hundreds of thousands of visitors from around the world and millions of radio and Internet listeners.

Following the departure of the Opry, Ryman Auditorium sat mostly vacant and decaying for twenty years. An initial effort by National Life & Accident to tear down the Ryman and use its bricks to build a chapel at Opryland USA was met with resounding resistance from the public, including the influential musicians of the time. The plans were abandoned, and the building remained standing with an uncertain future. Despite the absence of performances, the building still held such significance as an attraction that it would remain open for tours. In 1991 and 1992, Emmylou Harris performed a series of concerts there and released some of the recordings as an album entitled At the Ryman. The concert and album's high acclaim renewed interest in reviving Ryman Auditorium as an active venue. Beginning in September 1993, Gaylord Entertainment undertook a full renovation of the Ryman, restoring it into a world-class concert hall that reopened with a broadcast of A Prairie Home Companion on June 4, 1994. On Sunday, October 18, 1998, the Opry held a benefit show at Ryman Auditorium, marking its return to the venue for the first time since its final show on March 15, 1974. The show was well received by fans, performers, and management alike, and so the decision was made to host the Opry's regular shows there on January 15 & 16, 1999 as part of the celebration to commemorate 25 years at the new venue. Beginning in November 1999, the Opry was held at Ryman Auditorium for three months, partly due to the ongoing construction of Opry Mills. The Opry has returned to the Ryman for the three winter months every year since, allowing the show to acknowledge its roots while also taking advantage of a smaller venue during an off-peak season for tourism. While still officially the Grand Ole Opry, the shows there are billed as Opry At The Ryman. From 2002 to 2014, a traveling version of the Radio City Christmas Spectacular took up residence at the Grand Ole Opry House each holiday season while the Opry was away. It was replaced by Dr. Seuss' How the Grinch Stole Christmas! The Musical beginning in 2015.

How was it revived?

OUT:
In 1991 and 1992, Emmylou Harris performed a series of concerts there and released some of the recordings as an album entitled At the Ryman.