As they race to keep up with each other, they never look over their own shoulders to see that each part started running down different paths years ago.Aha! I see what the deal is.
It's strange how different electrical systems can be in two parts of the world. Parts which otherwise try to keep up with each other.
Voltage, medical care, unemployment, role of public education, college education costs, retirement & pensions, taxes, currency, liability & civil courts, public transportation, gun laws and urban sprawl - lots of difference while trying to maintain or advance a civil society.