Cameron counted a total of eight blocks stacked in a single pile of blocks. when the pile was knocked over and the blocks scattered in front of him, he knew that there were still eight blocks. this indicates that cameron has reached the stage of development.

The correct answer is Concrete operational

Explanation:  This stage is approximately between seven and ten years old. During the concrete operational stage, the child achieves the use of completely logical operations for the first time. Thought is no longer dominated by perceptions and the child is able to solve problems that exist or have existed (are concrete) in his experience. Thought becomes less egocentric. Now the child is able to build knowledge that is more compatible with the world around him. The real and the imaginary no longer mix in their perception. Thought becomes operative because it becomes reversible, that is, the subject can mentally return to the starting point.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations. click to let others know, how is it

the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.