"20th century events and icons": HTML5 Crossword

Across

5. Which Polish physicist developed x-ray technology? (5,5)
7. What was the name of the famous hippy music festival in the 1960s? (9)
10. What was made legal for the first time in the UK in 1967? (13)
12. Who was once known as 'the most hated woman in Britain', for her role in the Moors Murders? (4,7)
13. Which type of operation was first performed in 1967? (5,10)
14. Which location was nearly at the root of nuclear war in the 1960s? (4)
17. What was discovered by Alexander Fleming? (10)

Down

1. What hit an iceberg in 1912? (7)
2. Where was there a famine in the 1980s? (8)
3. Who pioneered mass production techniques (in the car industry)? (5,4)
4. Which boxer refused to fight in the Vietnam War? (8,3)
6. Which position was Hitler voted into in 1933? (10)
8. Around 20 million Russians died during which Russian dictator's rule? (6,6)
9. Who was the first man on the moon? (4,9)
11. Which queen died in 1901? (8)
15. Who helped to achieve Indian independence from the British Empire? (6)
16. Which drug (real name MDMA) was invented in 1912? (7)