The wheel and horse-<span>drawn chariot had been invented. I'm pretty sure about this but good luck :)</span>
It's The Battle of Kettle Creek.
The Battle of Kettle Creek was one of the most important wars fought in Georgia during the American Revolutionary War.
The battle began in February 14, 1779, when a force of around 400 American revolutionaries surprisingly attack the Loyalists, the ones loyal to the British Crown that had recently captured Savannah, Georgia. After four hours, the revolutionaries ended gaining the battle, even though the Loyalists outnumbered them.
The victory proved that British weren't capable to hold the interior of the American's state nor to protect Loyalist recruits outside their immediate area.
Answer:
They have to pay property tax, but the amount would be lower than middle age couple
Explanation:
Most states prepare a certain amount of Exemption for retired people's property tax. The amount will be different between each states, and the majority of states allow the exemption only for elderly who are 65 years old and above.
For example, if that elderly live in new york, they will receive 50% exemption from their property value. If they live in Houston, they'd have a fixed $160,000 exemption plus additional 20% of their property value.