This nation's flag is similar to the United States with 13 alternating red and white stripes, and a man in Kansas displaying it was accused of "ISIS activities" in 2017. One portion of this Asian nation is located on the Malay Peninsula while the other is located on the northern portion of Borneo. This nation's "Peninsular" portion is separated from the Indonesian island of Sumatra by the Strait of Malacca. For 10 points, name this growing Southeast Asian economic power with capital at Kuala Lumpur.
A) Thailand
B) Indonesia
C) Malaysia
D) Vietnam