Reasoning for a planet being able to form and maintain its spherical shape while also remains in orbit around the sun?

The most common economic system in the world is aclosed economy.command economy.mixed market economy.traditional economy.

How does the brandt line, walt rostow's modernization model, neocolonialism, and walterstein's world systems theory inform and intersect with each other when explaining economic development?

What is the y-coordinate of the point that divides thedirected line segment from j to k into a ratio of 2.3? -6-557