2 Complete the sentences. 1. Popcorn became popular at outdoor events because... 2. Because they began selling popcorn, cinema owners were able to...

1. Popcorn became popular at outdoor events because no kitchen was needed to prepare it and the popcorn maker was invented (Paragraph II). 2. Because they began selling popcorn, cinema owners were able to save many of the cinema owners from going out of business (Paragraph III).