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Five things you need to know about Lincoln

1. Liam Neeson was originally set to play Abraham Lincoln but dropped out, saying he felt too old.

2. Leonardo DiCaprio convinced Daniel Day-Lewis to take the role of Lincoln.

3. Bill Camp and Elizabeth Marvel who play Mr and Mrs Jolly are also married in real life.

4. Steven Spielberg wore a suit and tie to work every day in order to blend in better with the actors.

5. Many of the scenes include modern 50-star US flags when in fact they should have 25 or 36 stars.