Let the ruling classes tremble at a Communistic revolution. The proletarians [common people] have nothing to lose but their chains. They have a world to win. Working men of all countries unite!

—Karl Marx and Friedrich Engels, Manifesto of the Communist Party, 1848

The excerpt suggests that the authors saw historical events as results of
A.
social conflict.
B.
military victories.
C.
industrial regulation.
D.
international diplomacy.

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of

Witch theory suggests all living things are made up of cell or cells