Sentence Correction

Angola , which was ravaged by civil war for many years after it gained independence from Portugal , which is now one of Africa's success stories , has an economy that grew by 21% last year , where parliamentary elections are to be held later this week .

The answer given in the book is :

Ravaged by civil war for many years after it gained independence from Portugal ,Angola is now one of Africa's success stories : its economy grew by 21% last year , and parliamentary elections are to be held later this week .

According to me this answer is not focusing on anything , it just states everything in a jumbled manner .Kindly explain to me the same as it seems a little puzzling to me .
Also according to me the answer could be something like this :

Ravaged by civil war for many years after it gained independence from Portugal , Angola , which is now one of Africa's success stories and where parliamentary elections are to be held later this week , has an economy that grew by 21% last year .

Please suggest !

rahul312 wrote:Angola , which was ravaged by civil war for many years after it gained independence from Portugal , which is now one of Africa's success stories , has an economy that grew by 21% last year , where parliamentary elections are to be held later this week .

The answer given in the book is :

Ravaged by civil war for many years after it gained independence from Portugal ,Angola is now one of Africa's success stories : its economy grew by 21% last year , and parliamentary elections are to be held later this week .

According to me this answer is not focusing on anything , it just states everything in a jumbled manner .Kindly explain to me the same as it seems a little puzzling to me .
Also according to me the answer could be something like this :

Ravaged by civil war for many years after it gained independence from Portugal , Angola , which is now one of Africa's success stories and where parliamentary elections are to be held later this week , has an economy that grew by 21% last year .

Please suggest !

Answer that you gave is better bcos it first says that Angola is a success story and then states reason as to why it is.
In the option that you framed such a meaning sense does not come up; otherwise it is gramatically correct.