1. He became an assistant professor at Harvard that year and held that position until 1946.

2. Yahoo fought that court order before Mayer became CEO in 2012.

3. Zarif on Tuesday became the first Iranian foreign minister to visit Australia since 2002.

4. They replace the notes in circulation since euros became the cash currency in 2002.

5. Others were purchased after Kenya became independent in 1963.

6. Medvedev became the first Russian leader to visit Silicon Valley in June 2010.

7. The Manchester facility became available to tenants as of June 11.

8. It became her dungeon until she was rescued May 6,2013.

9. The third and final set became available with the release of WordPress 4.3.1 on September 15.

10. He became her manager in 2009.

11. It captures one frame every 8 hours starting when data became available in June 2010.

12. Hong Kong, a former British colony, became a special administrative region of China in 1997.

13. She became a criminal investigations detective in 2010.

14. He became a US citizen at 12, and opened his own recording studio in 1958.

15. He became Yahoo chief operating officer in 2012 and was dumped in January 2014.