How did the Garuda become Thailand’s national and royal emblem?

The national emblem of Thailand is referred to in Thai as “ตราแผ่นดินของไทย” (trā p̣hæ̀n din k̄ĥxng thai) and “พระครุฑพ่าห์” (Phra Khrut Pha), which translates to “Garuda as the vehicle” of Vishnu....