200 Countries and 200 years... in 4min.

Some say that last 200 years of human history was the greatest advancement of all time. And the progress of social, political and economical advance is still continues. However, the question is how can we sustain this progress? This video shows the progress of human sustainability last 200 years. It wasn't too easy. Half of the world suffered from colonial period, conflicts, economic crisis and two World War were on the way to reach high standard of living and income. Still, some nations are far behind than others. Some of them made exceptional progress.

As I watching this video, there are several questions on my mind.
1- How can we make the less developed countries to make progress?
2- When all of them reach high standard of living and income, what next?
3- Last, but most important, how we going to sustain the Everyone's high standard of living and income world?

This video gave me certain hope that we made a great progress and people can make this graph higher.

But then, how we going to sustain this progress...? zero idea...