Two mountain ranges, the Alps and the Apennines, helped to protect Rome from invasion. ... Any army attempting to attack Rome would be at risk of attack from the other side of the mountains. The Alps, located on the northern border of modern-day Italy, seal off the peninsula from the rest of Europe during winter.
Its C, The result of the "dear aunt jane" experiment.
I believe the answer is: exports minus imports ; ALL
Gross domestic product is calculated to measure one country's productivity within one year. Imports are considered other country's productivity, so it need to be deducted from the exports.
Total output is used as a factor to calculate GDP. It measures all goods or services that created by legal citizens in the country.
No..... If they're illegal, what's the point?
Answer:
I see the options but I think you forgot to include the question