The answer is c. Is done to support only certain causes
The person wrote about the life and history of Alexander the Great was John Gunther. I'm not sure what his work was called, I'm sorry.
This sentence technically doesn't contain an error in verb-noun agreement, however the noun "each one" is odd here. It should be "everyone"
The answer is Greece. The war was known as the Greek War of Independence aka the Greek Revolution. The Greek War of Independence was a successful independence war waged by the Greek revolutionaries between 1821 and 1832 against the Ottoman Empire
