Rivers provided easy access to trade and transportation, aiding westward movement.

Rivers provided easy access to trade and transportation, aiding westward movement.

• A. Increased population due to trade access
• B. Decreased population
• C. Led to more isolation
• D. No effect on population

Answer: (A)

Rivers act as natural highways, making it easier to move people and goods. When trade and travel are convenient, towns sprout along riverbanks, markets expand, and families are drawn to new settlements as resources and opportunities open up. That growth in trade and movement directly encourages population to rise in areas accessible by river routes, especially during westward expansion. So, increased population due to access to trade best matches the impact of rivers on westward movement. The other ideas—population decreasing, more isolation, or no effect—don’t fit because rivers generally attract settlers, connect regions rather than isolate them, and do influence where people live.

Rivers act as natural highways, making it easier to move people and goods. When trade and travel are convenient, towns sprout along riverbanks, markets expand, and families are drawn to new settlements as resources and opportunities open up. That growth in trade and movement directly encourages population to rise in areas accessible by river routes, especially during westward expansion. So, increased population due to access to trade best matches the impact of rivers on westward movement. The other ideas—population decreasing, more isolation, or no effect—don’t fit because rivers generally attract settlers, connect regions rather than isolate them, and do influence where people live.