Maths is Everywhere - Government

Dujiangyan (都江堰) was a great hydraulic engineering project of the Qin Dynasty government.

Tze Yu was fascinated with China and I created a larger drawing paper with the outline of the provinces. He started to find out from Youtube videos, with my supervision, about the uniqueness of the different provinces. He then drew anything he felt was uniquely mentioned in those short videos.

One day, we were talking about Sichuan province and I told him about my humanitarian trip to DuJiangYan 都江堰. Below is a write up from Wikipedia on DujiangYan：

The Dujiangyan (Chinese: 都江堰; pinyin: Dūjiāngyàn) is an ancient irrigation system in Dujiangyan City, Sichuan, China. Originally constructed around 256 BC by the State of Qin as an irrigation and flood control project, it is still in use today. The system's infrastructure develops on the Min River (Minjiang), the longest tributary of the Yangtze. The area is in the west part of the Chengdu Plain, between the Sichuan Basin and the Tibetan Plateau. Originally, the Min would rush down from the Min Mountains and slow down abruptly after reaching the Chengdu Plain, filling the watercourse with silt, thus making the nearby areas extremely prone to floods. King Zhao of Qin commissioned the project, and the construction of the Dujiangyan harnessed the river using a new method of channeling and dividing the water rather than simply damming it. The water management scheme is still in use today to irrigate over 5,300 km2 (2,000 sq mi) of land in the region. The Dujiangyan, the Zhengguo Canal in Shaanxi and the Lingqu Canal in Guangxi are collectively known as the "three great hydraulic engineering projects of the Qin."

Maths concept: 2 to the power of n

This led me to strengthen his ‘2 to the power of n’ concept.

What are some Maths concepts you can integrate into certain ‘Government’ topics?