https://en.wikipedia.org/wiki/Comanche

The population said to be varies between 7,000 to 30,000 people. https://www.britannica.com/topic/Comanche-people

The Comanche people unfortunately did not build cities.

They did manipulate their environment from riding and hunting.

The Comanche people didn't disappear they were forced onto reservations in Oklahoma by the late 1870s after diseases.

https://www.nps.gov/meve/learn/historyculture/upload/ancestral_pueblo_people_2018_508_01-24-18-2.pdf

the empire came to rule about 400 to 500 states which together is about 5 million to 6 million people under the Aztec rule as they mainly worshiped Huitzilopochtli the god of war and others like the god of rain tlaloc

they created language called nahuatl during there time they most likely died from a virus called the black death and killed around most of the population

https://www.theguardian.com/world/2018/jan/16/mexico-500-years-laterAztech Mountain

Aztech Mountain

https://aztechmountain.com-scientists-discover-what-killed-the-aztecs

https://en.wikipedia.org/wiki/Aztecs

Ancient Maya population may have topped 16 million, Tulane ...Maya was trived 9,000 year ago in central America The people live on tropical land that is now called Guatemala and the culture around the 6 century A.D. The great stone city was abandoned A.D. 900.Maya never disappears because a 9.5 Million of people live in Mexico today in central America. yes around the 3,5000 B.C. Mesopotamia saw the development of cuneiform 

How many people were a part of this culture? Did they build cities? How did they support them?

cultivation of corn (maize), beans, squash, and other crops, which resulted in large concentrations of population in towns along riverine bottomlands. A central ceremonial plaza provided the nucleus of a Mississippian town, and each settlement had one or more pyramidal or oval earth mounds, surmounted by a temple or chief’s residence, grouped around the plaza. This settlement pattern was typical of most of Middle America (central and southern Mexico and Guatemala) since as early as 850 bce, but it had not diffused into North America until the advent of the Mississippian culture.

What technological feats did this culture accomplish? What did they know? What makes them unique?

Craftwork was executed in copper, shell, stone, wood, and clay and in such forms as elaborate headdresses, ritual weapons, sculptured tobacco pipes, effigy pottery, effigies, and masks of wood or copper-jacketed wood.

How did this culture manipulate their environment?

The culture was based on intensive cultivation of corn (maize), beans, squash, and other crops, which resulted in large concentrations of population in towns along riverine bottomlands.

Did this culture have the ability to read and write?

Politically and culturally each large town or village dominated a satellite of lesser villages; government was in the hands of priest-rulers. Thus the complexes might be called theocratic village-states.

What do we know about their religion and social structure?

The government was in the hands of priest-rulers. Thus the complexes might be called theocratic village-states. Moreover, warfare, which was apparently frequent, produced larger alliances and even confederacies.

Did this culture disappear? If so, how? If not, how does it live on?

The Mississippian culture had begun to decline by the time European explorers first penetrated the Southeast and described the customs of the people living there. The Natchez are the best-known of the Mississippian cultures to have survived French and Spanish colonization; they numbered about 500 members in the early 21st century.

they used intensive water management such as aqueducts, and drainage(wikipedia)

the Olmecs used hieroglyphs. they had no know religion. the Olmec culture is considered a "mother culture" to later mesoamerican cultures.

The olmec society did not disappear they later transformed into the mesoamerican society because they declined in people.(National geographic) believed to have lived in the northern half of the isthmus of Tehuantepec in mesoamerica from 1200-500 B.C.E timeframe. There was tens of thousands of people that lived in la Venta and potentially hundreds of thousands in the wider region that were a part of the olmec people. The technological feat of the olmec people produced some of the best mesoamerican art works. They're most famous for colossal sculpture in volcanic stone and intricate worries in jade. They were most skilled in making many sculpture and cave paintings in their time.

links:

https://www.valenciatravelcusco.com/passion-passport/a-look-into-the-sustainable-inca-way-of-life

https://kids.nationalgeographic.com/history/article/inca-civilization

https://www.britannica.com/topic/Inca

The lnca existed in the late 1400s. It’s wintertime, and the Inca royal family is vacationing in Machu Picchu, a small city that serves as their royal retreat in what’s now Peru. The Inca capital city, Cusco, is now too cold, so the royals have traveled about 50 miles down the Andes mountains.The Inca Empire, at its peak before the Spanish arrival, likely had a population between 6 to 14 million people, though estimates vary, with some suggesting up to 12 million inhabitants from over 100 different groups. Innovative agriculture (terracing & irrigation) to conquer their challenging Andean environment, developing freeze-drying for food preservation and using complex knotted cords (khipu) for data recording, uniquely managing their empire without a written language. They also practiced advanced medicine, including trepanation (brain surgery).The Inca culture manipulated their environment by employing agricultural techniques that helped sustain their community. The Inca built agricultural terraces known as "andenes" which created microclimates for many crops and prevented soil erosion.The incas did not have an alphabetical system but instead they used strings called khipu to keep data and historical information and they would read these strings and understand them using knots,colors,and different positions and patterns.The Inca culture did not completely disappear but was shattered by the Spanish conquest in 1532 by some things like a disease like smallpox that destroyed some of the population, the internal civil war between Atahualpa and Huascar, the capture and execution of Emperor Atahualpa, and the superior Spanish weaponry. Today many Inca traditions and languages continue and blend with their religions and communities. 

Portrait Of A Negro is about a portrait that was drawn during the renaissance by a German artist. it was sketched about a century before Johnson's birth. No known portraits of Johnson exist.

Because there was no clear federal policy at this time concerning freed slaves, individual commanders made their own decisions as to how to handle this peculiar form of "contraband." The people in this picture have bundles with them, suggesting that they are preparing to be relocated. Their destination remains a mystery, but if they were treated as most others in their position, they were probably moved into a refugee camp or taken to work for the Union army.

This is important because it shows what these people went through during the slave release. It shows the mass number of slaves that were released during this time.

The slave traders in Africa didn't seize land from the natives. Instead, they established relationships with the chiefs and had the tribes capture and enslave the African people. The English got their slaves from the same people they were imprisoning. In 1725, an engraving by Serge Daget entitled An Englishman Tastes the Sweat of an African was featured in a book. It detailed slaves displayed for sale in a public market, them being examined before being purchased an Englishman licking one's chin to confirm his age, and to discover from the taste of his sweat that he is not sick and a slave wearing the mark of slavery on his arm. This engraving makes a statement of the mistreatment of African people by the English.

The Slave Chain a journalist who wrote about what happens in slavery and went to the king to convince him to stop slave trade and to tell the public what really happens to them during slave Chain