7 Faces of Dr. Lao is a Metrocolor 1964 film adaptation of the 1935 fantasy novel "The Circus of Dr. Lao" by Charles G. Finney.
 It details the visit of a magical circus to a small town in the southwest United States, and the effects that visit has on the people of the town.
 The novel was adapted by Charles Beaumont, directed by George Pal (his final directorial effort) and starred Tony Randall in the title roles.
Tony Randall (born Aryeh (Arthur) Leonard Rosenberg; February 26, 1920May 17, 2004) was an American actor, producer, and director, best known for his role as Felix Unger in the television adaptation of Neil Simon's play "The Odd Couple".
The Circus of Dr. Lao and Other Improbable Stories
Lao script, or Akson Lao, (Lao: ອັກສອນລາວ ] ) is the primary script used to write the Lao language and other minority languages in Laos.
 It was also used to write the Isan language, but was replaced by the Thai script.
 It has 27 consonants (ພະຍັນຊະນະ ] ), 7 consonantal ligatures (ພະຍັນຊະນະປະສົມ [pʰāɲánsānā pá sǒm] ), 33 vowels (ສະຫລະ [sálā] ), and 4 tone marks (ວັນນະຍຸດ [ván nā ɲūt] ).
Charles Grandison Finney (December 1, 1905 – April 16, 1984) was an American news editor and fantasy novelist, the great-grandson of evangelist Charles Grandison Finney.
 His first novel and most famous work, "The Circus of Dr. Lao," won one of the inaugural National Book Awards: the Most Original Book of 1935.
"Pheng Xat Lao" (Lao: ເພງຊາດລາວ ; lit.
 English: Hymn of the Lao People) is the national anthem of the Lao People's Democratic Republic.
 Dr. Thongdy Sounthonevichit composed the music and wrote the lyrics in 1941.
 This was adopted as the national anthem of the Kingdom of Laos in 1945.
 The original lyrics were revised after the Pathet Lao won the Laotian Civil War and the Lao People's Democratic Republic was established in 1975, with the new lyrics written by Sisana Sisane.
Operation Maharat II (31 December 1972 – 5 February 1973) was a Royalist offensive against Pathet Lao insurrectionists during the Laotian Civil War.
 The Royalists planned a two pronged convergence on four Pathet Lao battalions holding the intersection of routes 7 and 13.
 With neither side particularly avid for combat, the situation was resolved by the Royalist reinforcement of its attack forces until the Communists faced overwhelming odds.
 The Pathet Lao then decamped.
 Operation Maharat II ended on 5 February with an artillery fire base supporting an irregular regiment occupying the road intersection.
 On 22 February 1973, a ceasefire took effect.
Charles Beaumont (January 2, 1929 – February 21, 1967) was an American author of speculative fiction, including short stories in the horror and science fiction subgenres.
 He is remembered as a writer of classic "Twilight Zone" episodes, such as "The Howling Man", "Miniature", "Printer's Devil", and "Number Twelve Looks Just Like You", but also penned the screenplays for several films, among them "7 Faces of Dr. Lao", "The Intruder" and "The Masque of the Red Death".
 Novelist Dean R. Koontz has said, "Charles Beaumont was one of "the" seminal influences on writers of the fantastic and macabre."
 Beaumont is also the subject of a documentary, "Charles Beaumont: The Short Life of Twilight Zone's Magic Man," by Jason V Brock.
Dr. Vang Pobzeb, PhD.
 (or Pobzeb Vang) was a Hmong American dedicated to Lao and Hmong human rights.
 He was born in Laos on July 12, 1957 and died in Saint Paul, Minnesota on August 23, 2005, reportedly of a heart attack.
 He received his Ph.D at the University of Denver.
 He was recognized posthumously on September 22, 2005 by the Wisconsin Senate for his work assisting the Hmong and Laotian community.
 For over 25 years, he was an outspoken critic of the Marxist governments of the Pathet Lao in Laos and the Socialist Republic of Vietnam(SRV) and their human rights violations, religious freedom violations, and persecution of the Lao and Hmong people.
The Circus of Dr. Lao (1935) is a novel written by the American newspaperman and writer Charles G. Finney.
 It won one of the inaugural National Book Awards: the Most Original Book of 1935.

Question: What was the nationality of the star of 7 Faces of Dr. Lao?
Answer: American