My suffix is western, from a “western” perspective

Question

My suffix is western, from a "western" perspective
My prefix a strange domain, unless you know Latin
My infix a greeting, modernly its excitement subjective
My whole's population growth did recently flatten

hint:

domain references a TLD, if you don't know the acronym: https://bfy.tw/P5CB

Answer 1

Since the clues are in descending order of difficulty, let's do this one backwards:

My whole's population growth did recently flatten

Must be China. Let's see if we can't cram the rest of the clues in..

My infix a greeting, modernly its excitement subjective

china

My prefix a strange domain, unless you know Latin

ch is the top level domain for Switzerland, from "the Confederation of Helvetia", or more historically accurately, the Latin version thereof

My suffix is western, from a "western" perspective

NA, for North America, is the western part of the occident, or "the west" as it's also called.