City planners are laying the groundwork for their ideal city, cytopia. they have determined that there will be no more than three houses per acre. industry must be located outside the city boundaries. the city will be built around three miles of protected forestland on which no development can occur. the planners have determined cytopia's

urban form

Explanation:

Urban planning is a political and technical process which is concerned with design and development of the land use and built environment as well as infrastructure.

it deals with the physical layout of the human settlements. Public welfare is the primary concern of urban planning.

Public welfare includes the considerations of  sanitation, protection, efficiency and the use of environment, as well as the effects on the social and the economic activities.

Thus, the way in which Cytopia is being built is a type of urban planning in which is there is no crowding, no pollution as industries are outside city and also it is nearby forest as to get fresh air and also resources.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.