what is a more simple word for mountainous terrain, unified nation, particularly, combination of internal factors, excelled in intellectual pursuits and artistic expression, innovations such as the early forms of the scientific method and advancements, advancements,

Answer 1

Here are simpler words or phrases for each of the terms you've provided:

1. Mountainous terrain - hilly land or mountains
2. Unified nation - united country
3. Particularly - especially
4. Combination of internal factors - mix of inside factors
5. Excelled in intellectual pursuits and artistic expression - did very well in studying and art
6. Innovations such as the early forms of the scientific method - new ideas like the first scientific methods
7. Advancements - progress or improvements

Feel free to ask if you need further simplification or clarification!