Which nations are the wealthiest and dominate the global economy?

Which nations are emerging and have mixed characteristics?

Which nations are the most developed and tend to have democratic governments?

Which nations are the least developed and tend to have autocratic governments?

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.