There are no physical barriers that can define the border, and it can't be entirely based on ethnographic principle since population is mixed on both sides, and it can't be economic since Transylvania was mostly linked to Budapest by imperial railroad. So I wonder what was guiding treaty makers?

Also, which is the least likely to be built? Ideally, which would offer the greatest overall benefits if completed, and which would offer the least benefits? Realistically, which would be the most beneficial and which would be the most catastrophic if built? Consider factors such as geography, engineering feasibility, economic cost and benefits, and political relationships between the regions involved.

These were so interesting to me because I always wondered what would be special about them that we would never know like their culture, people, and land

What makes this turquoise color in the rocks?

Does it have to do with Spanish settlers?

Location: 49.0987954416N, 1.640249982E

Watch it full screen!

This demonstrates Hex9 - a near equal-area hierarchical hexagonal grid (DGGS), using it's own octahedral projection ('butterfly') and starting at Layer 0 (12 hexagons) - zooming into Layer 25. Hex9 goes up to Layer 30 or more - but I ran out of imagery.

The entire engine is available to make your own.

Or you can use it for data sampling, partitioning, geotagging.. you name it.

This demo uses the classic hex9 label - but it also supports a full Moore-type (closed) sphere-filling loop with the full Hilbert package — substitution self-similarity, prefix-nesting indices, consecutive cells always adjacent, range-query clustering within ~4% of the classical square-grid Hilbert.

Enjoy! And visit the arboretum some day!

....and every single pixel is a coloured hexagon on the grid.

How come west africa was able to develop centralized nation states and cities despite living in the savana while East and south africa didn't?

I feel like a lot of the maps I could find online omit a lot of the minor but still quite expansive mountain ranges that are found in North America so I wanted to take a stab at making map myself.

What would you add/remove/relabel?

In my own research the closest thing I found was Dar al Sudan but that's both far broader and coming from the Arab perspective not a local one. Was there too much separation between the coast Niger river Savana and Lake nations for one term to emerge?

Where does it begin? Line, Mountains, Rivers. I say line.

Any photos to share or anything geographical about india feel free.

After the One Child Policy was implemented in the PRC in 1979, the birth rate plumetted despite it rising slightly in 2016 and 2021 (due to the implementation of the Two Child Policy and Three Child Policy).

Despite no policy for maximum ammount of children is in place now, the PRC still has more deaths than births.

Therefore, could the PRC's birth rate be over replacement in none of these policies were implemented?

more specifically why is the central part of tanzania and kenya so under popuated. and why did the the people of the south african savanna like the zulu and the Maasai never formed cities

They are not playing around

Just west of Frankfurt (at Wiesbaden), the Rhine does something it almost never does for 1,200+ km: it turns and flows west instead of north for about 25 kilometers, forced by the Taunus mountain range.

Normally a river valley at the Rhine would mean both banks get roughly equal sun exposure. But because of this specific bend, the entire northern bank ends up facing due south. Add the river acting as a giant light-reflecting mirror onto the slopes, plus the Taunus blocking cold northern wind, and it adds up: according to the Hessian State Agency for Nature Conservation, Environment and Geology (HLNUG), which recorded data from 1901-2025, the Rheingau averages 10.2°C, compared to 9.3°C in Giessen, a nearby town at the same elevation. That's a consistent, measurable 1°C+ difference driven entirely by this geographic quirk.

That 1-2°C is the entire reason the Rheingau became one of the most valuable wine regions in the world, first cultivated by Cistercian monks starting in 1136, who recognized the anomaly and engineered the slopes for viticulture. Today bottles from cellars they built sell for over 9,000 euros at auction.

I made a short documentary exploring the geography and history behind this in more depth, happy to share the link if anyone's interested: https://youtu.be/cbdi-eeLKBA

I think it's a great example of how a small physical accident can shape centuries of human land use.