The only option that is not generally a reason why historians study societal change would be "<span>d. to estimate how long it would take to build a road system," since this requires a separate type of research. </span>
The Renaissance was a cultural movement that initially began in Florence, Italy, but later spread throughout Europe. It started around 1350 and ended around 1600. During the Renaissance (a word that means "rebirth"), people experienced changes in art, learning, and many other things.
Human activities that contribute to desertification include the expansion and intensive use of agricultural lands, poor irrigation practices, deforestation, and overgrazing. These unsustainable land uses place enormous pressure on the land by altering its soil chemistry and hydrology.
Communism is the idea of everyone being equal no private businesses, free healthcare free school etc everything is owned by the state it is a great idea that will never work because of peoples greed to want more and more. There are also problems and concerns with corruption as the businesses etc are all state owned
Capitalism is an idea that the countries/states economy is controlled by private businesses for profit rather than by the state. Which is currently how the US works.
I didn't put much details into the answer because I wanted it to be swift and not confusing I just outlined the basic idea of the two systems if you need more info let me know.
Germany is one if you consider the split of west and east germany
