Part One:

1. http://www.statista.com/statistics/267161/market-share-of-search-engines-in-the-united-states/

2. http://returnonnow.com/internet-marketing-resources/2015-search-engine-market-share-by-country/

3. http://www.alexa.com/topsites

4. https://translate.google.com/globalmarketfinder/g/index.html?locale=en

5. http://e.baidu.com/

6. https://wordstat.yandex.ru/

7. http://searchad.naver.com/

 

Part Two:

1. https://sites.google.com/site/webmasterhelpforum/en/faq-internationalisation#q5

2. http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes

3. http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2

4. https://en.wikipedia.org/wiki/List_of_blacklisted_keywords_in_China

5. http://wearesocial.com/uk/special-reports/digital-in-2016

6. https://en.wikipedia.org/wiki/Websites_blocked_in_mainland_China

7. http://www.internationalseomap.com/roi-calculator/