Which best describes nomadic people's interactions with other cultures? 1. they did not meet many other cultures because they stayed in one place constantly. 2. they met other groups along their travels and learned about the area from them. 3. they were all part of a big clan of people so it was difficult to meet new peoples. 4. they were wary of groups different from their own so interaction between cultures was limited.

They were wary of groups different from their own so interaction between cultures was limited.

Hope i'm right lol

Explanation:

number 4 They were wary of groups different from their own so interaction between cultures was limited.

Explanation:

the answer is a, salt plain

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)