38. Eastern border with either sector
a. Southern and western, northern and Western B.
C. The southernregion and northeast.
D. Central and southern 39.Any mountains in Eastern as a natural border between Thailand and Cambodia
a barrier. The mountains. The line B Chanthaburi
. C. The coupler
D. The Phanom Dong Rak
40.Which one is the plain north of the large
a. And Trat River Basin. ที่ราบลุ่มแม่น้ำ welu
B C. The plain river products.
. The Prachin Buri River Plains D.
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