Question: The Shards of Heaven chronicles Mark Anthony and what empire?

Context paragraphs:
The Gates of Hell (Livingston novel): The Gates of Hell is a 2016 historical fantasy novel by Michael Livingston.  The sequel to "The Shards of Heaven", it explores the aftermath of the fall of Alexandria to Octavian, and the continued struggles of Juba and Cleopatra Selene.

New World Order EP: The New World Order EP is an EP by Alec Empire, released in July 2001 only in Japan, from his album Intelligence and Sacrifice.  It was released shortly before the Japanese release of the album.  The EP contains among others two tracks from the "Shards of Pol-Pottery" EP by Alec Empire and El-P.

The Shards of Heaven: The Shards of Heaven is a 2015 historical fantasy debut novel by Michael Livingston.  It chronicles Octavian's war against Mark Antony and Cleopatra, seen from the perspective of the minor historical figures who surround them.

Mark Antony: Marcus Antonius (Latin: ; January 14, 83 BC – August 1, 30 BC), commonly known in English as Mark or Marc Antony, was a Roman politician and general who played a critical role in the transformation of the Roman Republic from an oligarchy into the autocratic Roman Empire.

Kindred Spirits (novel): Kindred Spirits is a fantasy novel set in the Dragonlance fictional universe.  It was written by Mark Anthony and Ellen Porath, based on characters and settings from Margaret Weis and Tracy Hickman's Dragonlance Chronicles series.  Published in 1991, it is the first volume of a six-part series on how first met.

Angel Diary: Angel Diary (Korean: 천행기 "Cheonhaeng'gi"; hanja: 天行記 "Cheonhaeng'gi"; "Destination Heaven Chronicles") is a "manhwa" written by Lee Yoon-hee and drawn by Kara.  It is based around the errant Princess of Heaven who is hiding on Earth as a boy, and the four guardians of heaven who watch over her.

The Letter Black: The Letter Black, formerly known as Breaking the Silence, is a Christian rock band that was formed in 2006 in Uniontown, Pennsylvania.  The band consists of lead vocalist Sarah Anthony; her husband, lead guitarist and vocalist Mark Anthony; and drummer Justin Brown.

Michael Livingston: Michael Livingston is a historian, a professor of medieval literature and the author of the 2015 historical fantasy novel "The Shards of Heaven".

Tony Hatch: Anthony Peter Hatch (born 30 June 1939), credited as pen name Tony Hatch, Fred Nightingale and Mark Anthony, is an English composer for musical theatre and television.  He is also a noted songwriter, pianist, arranger and producer.

Mark Wyatt (Welsh rugby player): Mark Anthony Wyatt (born 19 February 1957) is a former Welsh international rugby union player.  He played club rugby for several university teams, and later Swansea.  He was selected to play for Wales on ten occasions, scoring 81 points.  Mark was famed for his attacking fullback play and his place kicking.  He is the record points scorer for Swansea with 2734 points.  Mark’s current sporting interest lie on the golf course, playing off a handicap of 4 and he is a member of The Royal Porthcawl Golf club.  He is a Director at Gower Business Systems Ltd a leading ICT company in South Wales.

Supporting paragraphs: The Shards of Heaven Mark Antony
Answer: Roman Empire