The 70's Crossword

What was the most popular movie in the 70's?
Who's sang the song 'Dancing Queen'?
What was invented in the 70's?
What was the most popular item of clothing to wear in the 70's?
What was happening in Northern Ireland in the 70's?
What was the biggest blockbuster movie in the 70's?
Which word wide band broke up in the 70's?
Where did the earthquake that killed 242,700 people happen?
When did The Excorsist come out?
When did 'StarWars: A New Hope' come out?
Which country celebrated the Bicentennial marking 200 years as a nation?
Which band sang 'Stairway to Heaven'?
What was a very popular game in the 70's?
What was the name of the US president who was impeached in the 70's?
What kind of hair style were popular for men in the 70's?
What was a popular girls hairstyle in the 70's?
What type of trainers were popular in the 70's?
What is a very popular TV show in the 70's?
What thing on planes is not allowed now but was allowed in the 70's?
Which popular song by Elton John came out in the 70's?