Question

a smaller river that flows into a larger one. *
geography
resource
society
plateau
government
religion
latitude
longitude
equator
prime meridian
international date line
technology
global village
natural resource
developed country
developing country
export
import

Explanation:

In geography, a smaller river that flows into a larger one is called a tributary. Among the given options, geography is the most relevant field related to the description of water - body features.

Answer:

Geography