leopold
No third party icon theme that I’m aware of makes of use of accent colors.
These are known as the short scale and long scale systems respectively. Though the United States was indeed the first English-speaking country to switch to short scale, pretty much all English-speaking countries have used short scale almost exclusively for a long time, including the United Kingdom. Saying that it’s simply being influenced is an understatement. From Wikipedia:
British usage: Billion has meant 109 in most sectors of official published writing for many years now. The UK government, the BBC, and most other broadcast or published mass media, have used the short scale in all contexts since the mid-1970s.[12][13][43][15]
Before the widespread use of billion for 109, UK usage generally referred to thousand million rather than milliard.[16] The long scale term milliard, for 109, is obsolete in British English, though its derivative, yard, is still used as slang in the London money, foreign exchange, and bond markets.
I’ve never actually seen the word milliard used in English outside of discussions about the long and short scale systems. However, many other languages do mainly or exclusively use long scale. For instance, my native language French.
Having three levels of government is standard. It’s not a special American thing. Most countries have this outside of the really small ones. Even Serbia does, to a limited extent.
Excluding the de-facto independent province of Kosovo, The country has one autonomous province with its own government, namely Vojvodina in the North. Central Serbia however is not a province and doesn’t have its own government.
The country is further divided into 117 municipalities and 28 cities, all of which have a local government. Six of the largest cities are additionally divided into city municipalities, which also have a local government. This means that depending on where you live in the country, you’ll be subject to somewhere between two and four levels of government.