Question: Mathura art is usually contasted with art that is the artistic manifestation of Greco-Buddhism, and is a cultural syncretism between buddhism and what?

Context paragraphs:
Bhutesvara Yakshis: The Bhutesvara Yakshis, also called the Bhutesar Yakshis are a series of Yakshi reliefs on railing, dating to the 2nd century CE during the time of the Kushan Empire.  The reliefs were found in the Bhutesar mound, around the remains of a stupa, near Mathura, and are now located in the Indian Museum in Kolkata.  They are an important example of Mathura art.  Three more pillars and one fragment (half of a pillar) from this group are visible in the Mathura Museum.

Greco-Buddhist art: Greco-Buddhist art is the artistic manifestation of Greco-Buddhism, a cultural syncretism between the Classical Greek culture and Buddhism, which developed over a period of close to 1000 years in Central Asia, between the conquests of Alexander the Great in the 4th century BC, and the Islamic conquests of the 7th century AD.  Greco-Buddhist art is characterized by the strong idealistic realism and sensuous description of Hellenistic art and the first representations of the Buddha in human form, which have helped define the artistic (and particularly, sculptural) canon for Buddhist art throughout the Asian continent up to the present.  It is also a strong example of cultural syncretism between eastern and western traditions.

DeGrazia Gallery in the Sun Historic District: DeGrazia Gallery in the Sun Historic District is the artistic manifestation and architecture constructed by Ettore DeGrazia.  The property is a series of buildings scattered throughout a natural desert setting.  Built in Tucson near the intersection of Swan Road and Skyline the property is now a museum open to the public.  Construction began in 1951 with the open air Mission in the Sun followed by a series of other expressionistic adobe buildings.  The gallery/museum was constructed in 1965 with details including cactus flooring, exposed wood beams, rafters and unique artistic finishes.

Greco-Buddhism: Greco-Buddhism, or Graeco-Buddhism, is the cultural syncretism between Hellenistic culture and Buddhism, which developed between the 4th century BC and the 5th century AD in Bactria and the Indian subcontinent, corresponding to the territories of modern-day Afghanistan, Tajikistan, India, and Pakistan.  It was a cultural consequence of a long chain of interactions begun by Greek forays into India from the time of Alexander the Great, carried further by his successors' establishment of the Greco-Bactrian Kingdom and, later, Indo-Greek Kingdom, and extended during the flourishing of the Kushan Empire.  Buddhism was then adopted in Central and Northeastern Asia from the 1st century AD, ultimately spreading to China, Korea, Japan, the Philippines, Siberia, and Vietnam.

Winona County Courthouse: The Winona County Courthouse is the seat of government for Winona County in Winona, Minnesota, United States.  The 1889 Richardsonian Romanesque building was listed on the National Register of Historic Places in 1970 for having local significance in the themes of architecture, art, and politics/government.  It was nominated for being an artistic manifestation of Winona's prosperous riverboat and logging era.  It was the first courthouse in Minnesota listed on the National Register.

Buddhist influences on Christianity: It is agreed by most scholars that Buddhism was known in the pre-Christian Greek world through the campaigns of Alexander the Great (see Greco-Buddhism and Greco-Buddhist monasticism), and several prominent early Christian fathers (Clement of Alexandria and St. Jerome) were certainly aware of the Buddha, even mentioning him in their works.  However, the majority of modern scholars who have studied both Buddhism and Christianity hold that there is no direct historical evidence of any influence by Buddhism on early Christianity.  Scholars generally consider any such influence implausible given that first century Jews are highly unlikely to have been open to far eastern concepts that appeared opposed to some of their basic beliefs.

Mathura art: Mathura art refers to a particular school of Buddhist art, which centered on the city of Mathura, in central northern India, during the period in which Buddhism flourished in India.  The art of Mathura is usually contrasted with the Greco-Buddhist art of Gandhara.  In particular there is a debate about the origin of the Buddha image and the role played by each school of art.  Before the creation of an image of the Buddha, probably around the 1st century CE, Indian Buddhist art had essentially been aniconic, avoiding representation of the Buddha, but rather relying on its symbols, such as the Wheel of the Law or the Bodhi tree.

Buddhism in Afghanistan: Buddhism was one of the major religions in Afghanistan during pre-Islamic era.  The religion was widespread south of the Hindu Kush mountains.  Buddhism first arrived in Afghanistan in 305 BC when the Greek Seleucid Empire made an alliance with the Indian Maurya Empire.  The resulting Greco-Buddhism flourished under the Greco-Bactrian Kingdom (250 BC-125 BC) and the later Indo-Greek Kingdom (180 BC - 10 AD) in modern northern Pakistan and Afghanistan.  Greco-Buddhism reached its height under the Kushan Empire, which used the Greek alphabet to write its Bactrian language.

T'heydinn: T'heydinn or T'heydinne, variously also called "Al Batt Likbir" and "Al Rasm" is a Moorish epic ensemble of Mauritania.  It is an important literary and artistic manifestation of the Hassaniya language and was, in 2011, added to the UNESCO's Intangible Cultural Heritage List.

Shinbutsu-shūgō: Shinbutsu-shūgō (神仏習合 literally "syncretism of kami and buddhas"), also called Shinbutsu-konkō (神仏混淆 literally jumbling up or contamination of kami and buddhas), is the syncretism of Buddhism and kami worship that was Japan's only organized religion up until the Meiji period.  Beginning in 1868, the new Meiji government approved a series of laws that separated Japanese native kami worship, on one side, from Buddhism which had assimilated it, on the other.

Supporting paragraphs: Mathura art Greco-Buddhist art
Answer: Classical Greek culture