Technology & Ideas
The Tech system is tied to the population. Rather than a outlined system, where you select a technology to research, the population will develop tech to aid their current efforts. Based on various variables, a country will, thus, develop naturally into strong focuses.
Populations will develop technology based on their current occupations. I.e. Farming populations will improve their abilities at farming. They’ll develop better plow systems or crop rotation to increase productivity over time. Additionally, countries will develop into niches based on certain stressors. A country constantly at war, for example, will improve militarily while their diplomatic and civic advances fall behind. While a coastal country will develop navally, fishing and ships rather than agriculture and troops.
Technology can also, under specific circumstances, backslide and be lost. This is seen most famously in the Fall of Rome where much of the technology in Europe was lost such as the ability to formulate concrete. as well as much of the philosophical ideas like constitutions and rights. This will be represented by the loss of certain tech during massive catastrophes and is important to representing the full history.