I believe its Greenland hope this helps.
Built a fantastic city in the Andes where stone masons fitted gigantic blocks of stone without help
created a system of picture writing carved in stone
They had a new general and created an ambush. Hope I helped :)
One problem for the social security system is that there's more and more older people and fewer young people, so if they massively retire, there won't be enough workers to keep the social security system working because not enough taxes will be paid. A possible solution can be an increase the the obligatory retirement age. This would mean that people would work longer before retiring so they would use less social security money.