Exchanges of plants, animals, diseases and technology transformed European and Native American ways of life. ... Advancements in agricultural production, evolution of warfare, increased mortality rates and education
WHAT IS THE PROBLEM WITH SOCIAL SECURITY? The answer is a long-term shortfall. Social Security plans for solvency over 75 years, but because of demographic pressures and the weak economy, it is currently solvent only until 2033. After that, without reforms, it would pay about 75 percent of promised benefits.
Geographic isolation could be caused by a number of environmental factors. If a population of people or species live on an island, amongst mountains, in difficult to navigate terrain, or deep into rainforest or forests generally these groups could experience geographic isolation. Geographic largely occurs if a population or group of people or animals live in a remote region of the world that has little access to others due to any number of geographic features.
Egypt's upper class was made up of the wealthy people (nobles, priests) and they usually work as government officials. These people lived on large estates in big cities.
Egypt's middle class were the people who ran small businesses or produced goods. (They were mostly artisans)
The lower class mainly consisted of farmers (who made up the majority of the population)
The Egyptian society was divided into social groups based on wealth and power.