Adult ages of the world (part 1)

 We  would like to start our blog. Feel free to read or write personal oppinions.

 As you can see in the home page, most countries' adult age are 18 years old or 20 years old. I would like to introduce some countries which the adult age are 18 and 20 years old. Firstly, the countries which are 18 years old are England, Italy, Australia, Switzerland, Germany, Turkey, Brazil, France, China etc. Secondly, the countries which are 20 years old are Japan, Thiland, New Zealand, Korea etc.
 In the near future, we would like to discuss what is so different between 18 and 20 years old. There are also countries that are not 18 or 20 years old so, we will introduce them next time.