Think about the old-age ratio.
The old-age ratio is the number of not working/economically inactive compared to the number of people of working age.
The older generations (financially inactive) are dependent on the working group (let's say ages 15-64), since they pay the majority of the taxes and have essential jobs. A lot of elders are dependent on financial aids (which are paid for by the tax-payers) and essential workers (nurses, doctors etc.).
If the younger generations were to disappear, the working group would get smaller and smaller as more people retire. As the working group gets smaller, the retired group gets larger, creating an increased demand on the working group until it would eventually reach a breaking point. The old-age ratio would increase.
Give an explanation for the decline of the Roman Empire: The tribes wouldn't have been capable of invading if the military hadn't fallen apart. This report allows explaining the decline of the Roman.
The Roman Empire became the submit-Republican period of historic Rome. As a polity, it included huge territorial holdings around the Mediterranean Sea in Europe, North Africa, and Western Asia, dominated by emperors. the most important contiguous empire in history, the Mongol Empire emerged from the unification of Mongol and Turkish tribes beneath Genghis Khan.
The Roman Empire changed into the submit-Republican duration of ancient Rome. As a polity, it included huge territorial holdings around the Mediterranean Sea in Europe.
The Roman Empire became one of the finest and maximum influential civilizations in the global and lasted for over a thousand years. The quantity and duration of their reign have made it tough to hint at their rise to power and their fall.
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The industrial revolution changed the lifes around the globe.
I believe it was Uranus. Hope this helps!
The best option from the list would be "confederate," since this type of government creates a "loose" bond between states with a relatively "weak" central government.
