How I Increased my blog Page RPM from Low to high

It's a long back story when my adsense page RPM was as low as $0.90 and that need to increase for get good revenue from my blog.

So I applied a very simple trick that  I started to write content for the country that has a high page RPM.

here page RPM means  Revenue per thousand page view 

as my website page view was 10000 per day but I was getting only $9 per day hence my page RPM was $0.90  and its too low so I started working on this to improve this Page RPM and the simple tricks was to add content for the country from I can get maximum CPC (cost per click )

so country like Hong kong where i am getting page RPM around US $23.36 , Norway US $20.29, belgium US $18.35 and so on