Question: Geoff Rickly and James Mercer, are both of which nationality?

Context paragraphs:
James Mercer (musician): James Russell Mercer (born December 26, 1970) is an American singer-songwriter, guitarist, and musician.  He is the founder, vocalist, lead singer-songwriter, and sole remaining original member of the indie rock group The Shins.  In 2009, Mercer and producer Danger Mouse formed the side project Broken Bells, for which they released a self-titled album in March 2010, followed by "After the Disco" in 2014.  Mercer has also acted, appearing in Matt McCormick's feature film "Some Days Are Better Than Others", which premiered in 2010.

United Nations (band): The idea of the side project can be traced back to the early 2000s, but it was not until 2008 that United Nations took shape.  Geoff Rickly has said the band started over tequila with Daryl Palumbo.  At the start of the band, all members except for Rickly were under contracts with other record labels and were not legally permitted to work in projects released by another, making it difficult for the official lineup of the band to be well known.  However some members from the band's original line-up have been revealed through interviews and social media posts, such as Daryl Palumbo, Jonah Bayer and Lukas Previn.  Since Rickly was the only member whose primary band was not under contract, his name is the only one that could legally appear in press materials.  Press photos of the band released in 2008 depict four people wearing Ronald Reagan masks.

No Devotion: No Devotion are a Welsh/American alternative rock band formed in 2014.  They are composed of American vocalist Geoff Rickly (of the band Thursday) from New Jersey, and former band members of the Welsh band Lostprophets.  The band formed in the wake of Lostprophets' dissolution in 2013.

Secret Lives of the Freemasons: Secret Lives!  of the Freemasons or alternatively "Secret Lives!"  was a band from Asheville, North Carolina.  They formed in Asheville in 2003 after the breakup of two other local bands, A Kiss Before Dying and Throwing Myself.  In 2004 the group signed with Astro Magnetics (partly owned by Geoff Rickly of Thursday), who released their 2005 full-length; the group left the label in June 2007, and the next month signed with Victory Records who have signed such bands as Atreyu and The Audition.  They have toured nationally with such groups as He Is Legend, Scary Kids Scaring Kids, The Sleeping and Envy On the Coast.

Geoff Rickly: Geoffrey William "Geoff" Rickly (born March 8, 1979) is an American musician, best known as the lead singer and songwriter of rock band Thursday.  Rickly is also a member of hardcore punk band United Nations, and the alternative rock group No Devotion with former members of Lostprophets, and is the founder of the record label Collect Records.

...To the Beat of a Dead Horse: ...To the Beat of a Dead Horse is the debut studio album by the American post-hardcore band Touché Amoré.  released on August 4th 2009, through 6131 Records.  It was produced by Alex Estrada, while the album artwork was created by guitarist Nick Steinhardt, the album features guest appearances from Thursday vocalist Geoff Rickly and Modern Life is War vocalist Jeff Eaton.  The songs "Broken Records" and "Honest Sleep" were rerecorded from the bands self-titled debut EP that was released in 2008.

Thursday (band): Thursday is an American post-hardcore band, formed in New Brunswick, New Jersey in 1997.  The band consists of Geoff Rickly (lead vocals), Tom Keeley (lead guitar, backing vocals), Steve Pedulla (rhythm guitar, backing vocals), Tim Payne (bass guitar), Andrew Everding (keyboards, backing vocals), and Tucker Rule (drums).

Ocean Avenue Acoustic: On August 13, 2013, Yellowcard released an acoustic version of "Ocean Avenue" in honor of the original album's tenth anniversary.  The band mentioned that they had spent months "re-imagining" the original 13 tracks.  Yellowcard also announced an Ocean Avenue Acoustic tour in the U.S., Europe, and Australia with special guest Geoff Rickly of Thursday.  In early 2014, the band again took the Ocean Avenue Acoustic tour out for a second leg around the United States, this time with special guests What's Eating Gilbert.

Signals Over the Air: "Signals Over the Air" is the first single from "War All the Time" and the first major label single from the band, Thursday, reaching No. 30 on the "Billboard" Modern Rock Tracks chart.  "Signals Over the Air" was released to radio on August 12, 2003.  It performed at most live Thursday shows, usually with vocalist Geoff Rickly explaining that the song is about sexual revolution; during the tour following "War All the Time", an extended introduction was played before the song.  This introduction was recorded as part of the "Live from the SoHo & Santa Monica Stores" split EP; a live acoustic version of single the song was used on Y100 Sonic Sessions Volume 8, taken from a live radio session recorded by the band in November 2003 at Indre Studios in Philadelphia.  A radio edit exists as well, removing much of the bridge near the end of the song.

Astro Magnetics: Astro Magnetics is an imprint label of Eyeball Records and is owned by Marc Debiak, Alex Saavedra and Thursday's Geoff Rickly.

Supporting paragraphs: Geoff Rickly James Mercer (musician)
Answer: American