The six of geography include “places and regions” and “human systems.”

This question is incomplete because the options are missing; here is the complete question:

The six of geography include “places and regions” and “human systems.”

A.  key areas

B. essential elements

C.  environments

D.  spatial terms

The correct answer to this question is B. essential elements

Explanation:

Geography is a science that focuses on analyzing the forms of land, the features on Earth, and the interaction of human societies with these. All of this knowledge is divided into six essential elements that include places and regions, human systems, spatiality, uses of geography, among others. In the case of "places and regions," this focuses on understanding the division of land based on social construction and also, land features. On the other hand, human systems focuses on the interaction of human societies with geography.

use wikipedia, i think they have this.

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.