Wards are just like any other political division, though they are perhaps the smallest politically-relevant one possible.
As with other political boundaries, they are subject to be being redrawn by the political entity responsible for them. In this case, wards are almost always a function of city government, though in rural areas, they can often fall to county government.
What triggers a ward redrawing can be myriad: requirements from the city/county charter, state-level requirements, or even merely desire by the responsible government entity. Typically, changes in resident population are the most common, though they can often also be a result of zoning and redistricting changes. Wards may also need to be redone when the "owning" government entity changes, so (for example) if a formerly unincorporated area is brought under control of a city government, new ward boundaries are likely to be created.
Note that wards are mostly irrelevant today - they almost always serve merely as a convenient way to determine where voting is done for local residents of the ward, and little else. Consequently, there is generally very little incentive or desire to redraw existing ones.
Yes, political boundaries are man-made although they may follow geological boundaries such as shorelines, rivers, or mountains.
Personal bubble, mental boundaries, and scientific boundaries.
A region based on political boundaries is a formal region.
A political map serves this purpose as opposed to a physical map which shows features of geography, such as mountains
probally
After wars, political boundaries are often changed
In the twentieth century, independence movements and decolonization changed the world's political boundaries and new nations were formed
In the twentieth century, independence movements and decolonization changed the world's political boundaries and new nations were formed
The political boundaries of Central and Eastern Europe changed significantly.
Yes, political boundaries are man-made although they may follow geological boundaries such as shorelines, rivers, or mountains.
Personal bubble, mental boundaries, and scientific boundaries.
political
political
rivers
Physical boundaries are natural features like mountains or rivers that separate regions, whereas political boundaries are man-made lines denoting the borders of countries or territories established by governments. Physical boundaries are determined by nature, while political boundaries are decided by human agreement and often subject to change.
Gerrymandering
A ward boss is the leader of the political machine, in a particular area (ward) of the city.