The answer would be Ecosystem because that's the exact definition : D
What’s the question asking for though?
Answer:
to pay financial benefits to retirees over age 65 based on lifetime payroll tax contributions
Explanation:
Roosevelt in 1935, created Social Security, a federal safety net for elderly, unemployed and disadvantaged Americans. The main stipulation of the original Social Security Act was to pay financial benefits to retirees over age 65 based on lifetime payroll tax contributions
I believe that continuous warfare made Roman armies stronger (because they adapted tactics of there enemies) and increased the amount of land the Roman Empire ruled.
