Help me plss! i’m in 6th grade

What is the reason for the “scramble for africa”?

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor.b. increased mechanization has increased the need for water, thereby increasing the need for labor.increased mechanization has increased the use of land, thereby increasing the need for labor.d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

The creation of the trans-siberian railway allowed people to travel across russia. how could this railway impact russian culture?