Explanation:
The Romans actually used urine to brush their teeth. They did this because of the presence of ammonia in it.
2. Europeans wanted to share their wealth with the less fortunate.
Answer:
Some slaves bought their own freedom from their owners, but this process became more and more rare as the 1800s progressed. Many slaves became free through manumission, the voluntary emancipation of a slave by a slaveowner.
Explanation:
