When was paper invented?
About 2000 years ago
What insect makes silk?
Silkworms
How long ago was printing invented?
More than 2000 years ago
What were compasses used for?
To find north and follow maps
What did the needle show?
North
When was gunpowder discovered?
1100 years ago
How do you make gunpowder?
You mix different kinds of salts.
When was the oldest booked printed?
More than 1100 years ago
What was gunpowder used for?
fireworks
