A because it’s caused by slipping
<span>Four important river valley civilization of the ancient world would are Mesopotamia civilization, Egypt, Indus valley and Yellow river civilization. All these civilizations happened to be around similar period in history. The Mesopotamia civilization was settled around Tigris-Euphrates valley around 3500 BC. The Egyptian civilization in Nile valley started around 3200 BC, the Harappan civilization around the Indus valley would gain prominence around 3200 BC and the Yellow river civilization around 2100 BC.</span>
Answer:
Answer is A. Primary
Explanation:
Primary economic sector involves the activities in which natural resources are used directly without any changes. Any changes like manufacturing or processing makes it secondary.
Since Andy is a captain of fishing boat where they are capturing natural resources (fish) making it a primary economic sector activity. Other primary economic activities are forestry, mining and agriculture etc.
