The Answer is going to be C.
Hope this helps :)
Answer:
I'd say the Great Wall of china
Explanation:
built over 2300 years ago, it's over 20,000 miles long!
A Simple Yet Powerful Economy
Ancient Rome was an agrarian and slave based economy whose main concern was feeding the vast number of citizens and legionaries who populated the Mediterranean region. Agriculture and trade dominated Roman economic fortunes, only supplemented by small scale industrial production.
I believe it's because the British Empire inconsistent treatment.
At first, British empire treated the colonists fairly and both of them developed a mutually beneficial relationship with one another.
After 1763, the British Empire issued a regulation that banned the Colonists to issue their own paper money, which make it realy hard for the colonists to pay off their debt.