Answer:
A specific failure of the Reconstruction was that governments of Southern states passed JIm Crow laws.
The correct answer is - D) the development of steel tools.
This early societies managed to have complex economies because they invented and started using the steel tools. This types of tools enabled them to create more, to significantly widen the spectrum of what they can produce and the quality of it. That gave them an advantage in trade too, so their economies were prospering and over time became complex and strong economies.
The first "cameras" were used not to create images but to study optics. ... He invented the camera obscura, the precursor to the pinhole camera, to demonstrate how light can be used to project an image onto a flat surface.
A republic is the correct answer
