Chad-
Central Africa-
French and Arabic, (Official), Sara (South)
(Central Intelligence Agency, 2018)
Turkey-
SouthWest Asia and SouthEast Europe -
Turkish (official) and Kurdish
Kuwait-
"Middle East" Eurasia between Iraq and Saudi Arabia
Arabic (Official) and English
Mongolia, China-
Northern Asia, between China and Russia
Mongolian, some Russian and Turkic
Cyprus-
Middle East ( though the country can be classified as European) Its South of Turkey
Greek and Turkish (Official)
https://www.cia.gov/library/publications/the-world-factbook/geos/cd.html
I would say C. Land. The Earth's surface is 71% water. So the remaining would have to be land.
Gravity has a impact in the tides because of the moons gravational pull
The Caribbean is the southeast of Gulf of Mexico, east of Central America, and north of South America!
Culture is the answer for your space.