Wordly wise question why would many in thailand be unaccustomed to city life

Many people in Thailand are unaccustomed to city life because Thailand is mostly made up of mountainous terrain and many forests.

I believe the answer is: Because Thailand is mostly made up of mountainous terrain and many forests

Because of this, the majority of citizens' activity is designed to fully take advantage of these geological terrains. Rather than city-life, it is much more common to seek things such as agricultural farmings, mountain sports, and animal attraction in thailand.