The ancestor choose to live along rivers, the source of life. Today's travelers choose to stay close to electrical sockets.
It is important to know what are the voltage and the type of socket in your destination, if you need to use your appliance for example the chargers and laptop.
There are currently 15 types of electrical outlet plugs in use today worldwide, each of which has been assigned a letter by the US Department of Commerce International Trade Administration (ITA), starting with A and moving through the alphabet.
All over the world, there are different types of electrical wall outlets. Unless your destination country has the same outlet configuration as your home country, you will need an adapter. Adapter plugs do not convert electricity, they simply allow the plug of your device to fit into the foreign outlet.
Graphic from https://www.skyclub.com/blog/plugs-unplugged-know-your-travel-adapters
Type A: mainly used in the USA, Canada, Mexico & Japan
Type B: mainly used in the USA, Canada, Mexico & Japan
Type C: commonly used in Europe, South America & Asia
Type D: mainly used in India
Type E: primarily used in France, Belgium, Poland, Slovakia & the Czech Republic
Type F: used almost everywhere in Europe & Russia, except for the UK & Ireland
Type G: mainly used in the United Kingdom, Ireland, Malta, Hong Kong, Malaysia & Singapore
Type H: used exclusively in Israel, the West Bank & the Gaza Strip
Type I: mainly used in Australia, New Zealand, China & Argentina
Type J: used almost exclusively in Switzerland, Liechtenstein & Rwanda
Type K: used almost exclusively in Denmark & Greenland
Type L: used almost exclusively in Italy & Chile
Type M: mainly used in South Africa
Type N: used almost exclusively in Brazil
Type O: used exclusively in Thailand
For more details about the plugs and sockets in different countries, please visit here
The world runs on two types of electricity: 110/125V or 220/240V. North American, Japanese devices run on 110/125V electricity while the majority of the world runs on 220/240V. Plugging your gadgets in a high voltage outlet can result in shorting your device. Remember to check your device, if necessary, bring a converter / transformer which changes the voltage of electricity to match the voltage of your device.
For more details about the voltage in different countries, please visit here
The label on your device will help determine if a voltage converter or transformer is necessary. This label may be: a) affixed directly to the back of the device; b) on the AC transformer box of the power supply lead; or c) molded into the plastic on the plug. It is often in very small print.
Further information can be found here