This is a great first cut, judged by the number of words and the overall structure of the article. This will provide an excellent exercise in reductive editing, that is tightening up, shaping the language to the style of wiki writing, and generally making this a classic bio statement. As it stands, there is a mix of factual reporting (good) and editorializing (less good), sometimes through the words of Snowden or others. With someone as controversial as Snowden, presenting a balanced view of his critics and supporters is challenging. It will be a good exercise to create that balance as strictly in the wiki style as possible.
References need to be fleshed out as full citations. Snowden was born in Elizabeth, NC.