Read these extracts from the listening.

1 Was it the same as modern toothpaste? Definitely not. Ancient Greek toothpaste used ingredients like crushed bones and oyster shells.
2 Some generals would even throw dead bodies at the enemy or into the enemy's river.
3 In the eighteenth century, one way American Indians were killed was through using infected blankets given to them by the Europeans who were colonising America.
4 A rich banker installed it in his house so that he could grow grapes in England's cold weather!
5 Interestingly, it seems that only kings or very important people had umbrellas in these sculptures. So they were a symbol of high social class.

Find the word or phrase to match the meaning.

containing dangerous bacteria which spread disease