Theory:

     Sinbad the Sailor is a fictional mariner and the hero of a story-cycle of Middle Eastern origin. He is described as a man from Baghdad during the early Abbasid Caliphate (8th and 9th centuries CE). In the course of seven voyages throughout the seas east of Africa and south of Asia, he has fantastic adventures in magical realms, encountering monsters and witnessing supernatural phenomena.
Explanation:
 
Sinbad, the sailor, was the protagonist of the Middle Eastern story-cycle. He was a fictional mariner.
 
shutterstock_1822578443.jpg
Sindbad, the sailor
 
The term "story-cycle" is also known as a story sequence or composite novel. The story cycle's narrative style is specifically composed and arranged in a beautiful way to create a different experience for the readers. Likewise, Sindbad's story is also written in the form of a story-cycle.
 
The sailor's story began in the city of "Baghdad". Baghdad was founded in the 8th century and became the capital of the Abbasid Caliphate. Abbasid Caliphate was a dynasty of caliphs who ruled Baghdad from \(750\) to \(1258\). Sinbad belonged to a famous city called "Baghdad", and he had a great love for his hometown. Sinbad, the sailor, made seven voyages throughout the seas East of Africa and South of Asia.
 
shutterstock_1025828704.jpg
Baghdad
 
The sailor faced many exciting adventures throughout his seven voyages, like fighting with monsters, mystical powers, and discovering superhuman events. Sindbad, the sailor, believed in luck and good fortunes. His belief saved him from all struggles and hardships. The sailor's will power and the people he met on each journey gave him a good lesson and a good way of living. At the end of each voyage, the sailor yearned to return to his city, "Baghdad". His longingness towards his hometown was clearly seen in all his voyages.
 
shutterstock_1052359274.jpg
Encountering monsters
 
Meanings of the difficult words:
 
S.No
Words
Meanings
1
SailorA person whose job it is to work as a member of the crew of a commercial or naval ship
2
ProtagonistThe leading character or one of the major characters in a play, film, novel, and short story
3
Abbasid Relating to a dynasty of caliphs who ruled in Baghdad from 750 to 1258
4
CaliphateThe rule or reign of a caliph or chief Muslim ruler
5
Slaying monsters Encountering monsters; killing monsters
6
Story-cycleSometimes referred to as a story sequence or composite novel
7
YearnedHave an intense feeling of longing for something
Reference:
State Council of Educational Research and Training (2019). Term-1 English Standard-7. Sindbad-My First Voyage (pp. 97-104). Published by the Tamil Nadu Textbook and Educational Services Corporation.