World War 1 was the basics of the conflict that the world had in general. <span />
<span>The invention of tools and mastery of fire led to the development of "advanced civilizations," since this allowed for early humans to gain far more food sources and intake more calories. </span>
Answer:
Plains: Areas of land that are flat or gently roaming. Destructive forces that make plains: Plains may occur were mountains or volcanoes once were. Weathering would break down the rock of the mountain or volcano into the sediment, and erosion would carry the sediment away.
The right choice to your question would be D. Splitting work equally between two people.