Which of the following is most likely to connect a cultural region?
language
political boundaries
public services
birthrates
roads

Language

Explanation:

A cultural region or a cultural sphere or a cultural area refers to the geographic region where one type of or homogeneous activity is performed and is often associated with the ethnographic groups and the territory it inhabits and thus is characterized by a substantial uniform environment and culture.

Increasing the release of greenhouse gases and pollution

Answerhighlands and forests;