China was colonized by the UK, USA, Japan,Germany, France, etc after the Opium War. Where the British forced them to buy drugs.China colonized for two hundred years? By whom?
As to growth rates: Let's take two economies. One economy has a GDP of 100 and the other GDP of 1000.
The first economy grows its GDP by 10 so that in year two, its GDP is 110. The second grows its GDP by 50 so that in year two, its GDP is 1050. So the second economy increased its GDP by five times that of the first.
GDP in the first is growing at 10 percent per year over the two year period, no? What's the percentage growth in the second?
So let's take your second question a little further. In 100 years, the economy of the first country will be 2,206,000. The economy of the second will be 148,000 - less than one tenth of economy one
The power of compounding!