America's economy grew by more than 400% between 1860 and 1900
Technological advances, expanding population, improved transportation,
financial innovation, and new business practices combined to fuel this
economic growth
"Titans of Industry" like John D. Rockefeller, Andrew Carnegie, and J.P.
Morgan built monopolies and revolutionized business practices
Laissez faire ideology called for little or no government regulation of
economic affairs
Unskilled urban workers did not share in economic gains, instead
enduring great poverty
The picture depicts women's Sufferage
The skepticism about the empire of Ghana and the accounts for it is nothing weird because the majority of what is written about it is from two people from the same place, that had totally different views and interpretations on the things, and came from different culture.
Very often in the historical text, the people that wrote something have been very subjective, not objective. Thus the writings of these two Arab geographers can be very misleading, as they described what they saw with their own eyes, but also with using their own perception. That has proven numerous times to give very inaccurate depictions of a society and culture, like the depictions of the Romans for the Celts, or of the Greeks for the Scythian female warriors that they named Amazons.
There's only one point of view unfortunately, and it is always much more reliable when multiple writings are available from people from multiple different backgrounds, or the best scenario if it is writings from the people in question.
Gerrymandering is the dividing of a state, country, etc. into electoral districts so as to give one political party a majority in many districts while concentrating the voting strength of the other party into a few districts as possible.
The part in control uses it to control the voting district by “cracking” which means diluting the voting power of the opposing party’s supporters across an abundance of districts. Or use it as “packing” which means concentrating the opposing party’s voting power in one district to reduce their voting lower in other districts.