Why are there similarities in the art forms of lowlanders?

Similarities in the art forms of lowlanders can be attributed to shared cultural, historical, and environmental influences. Many lowland communities often face similar socio-economic challenges and lifestyle practices, leading to the adoption of comparable artistic expressions. Additionally, trade, migration, and communication between neighboring groups facilitate the exchange of artistic techniques and themes. These factors contribute to a convergence in styles, motifs, and materials used in their art.