The correct answer should be A. A historian writes an extensice text on the important contributions of southeast Asian contries
Asian countries' history is often based on periods that are bound by the rule of various dynasties or by political engagements of the country.
Hopes this helps
The people who they call 'muckrakers' tried to help them out, one even made a book about it
It is a compound complex sentence where there are two phrases used together and there is one dependant. For example, because my pizza was too cold i heated it in the microwave. There the sentence given here is an example of compound complex sentence.
More such examples are, i waited for too long but then i decided to go alone. In compound complex sentences there is a dependant on which the sentence is based. The two phrases are linked together with that dependant.
