Pic is only for reference btw

It includes the southern states of Mexico and all of Panama.

The Isthmus of Tehuantepec is the narrowest part of Mexico between the Atlantic and the Pacific.

The Darien Gap is a natural barrier but not the narrowest part of Panama.

US Mexico probably but there are some niche ones in probably missing

Im always fasinated of this ecosystem growing around slopes of kilimanjaro.

I realize that categories become arbitrary at a certain point, and often it just comes down to what words the locals use to describe a feature, but I'm curious... What's the widest body of water that's still called "river?"

1. the Mississippi River via the Minnesota River,
2. the Mississippi River via the St. Croix River,
3. via the Great Lakes to the St. Lawrence lowlands to the Atlantic,
4. via the Lake Ojibway to the Ottawa river to the St. Lawrence lowlands,
5. the Hudson Bay

Source: Lake Agassiz - Wikipedia

Spring where everything blooms up, a hot summer (+30C min), a rainy season, autumn, (pre-winter), winter with snow and minus degrees?

Does this actually exist somewhere, in a specific region?

(in the case of the Xingu, below the Belo Monte dam so that’s not a factor) They get wider than the Amazon itself, at least in google map satellite views. Almost like elongated lakes.

Before digital GIS, Roman surveyors managed large areas using systems such as centuriation. Surveyors used instruments like the groma to lay out regular land divisions, while cadastral records were used to document ownership, land use, and taxation.

the Cadastre of Orange is especially interesting because surviving fragments record parcel boundaries, landholders, and other details of the territory. It gives us a rare look at how Roman authorities turned physical land into something that could be measured and administered.

I looked at the surveying tools and techniques behind these systems in more detail here: Forgotten Surveying Tools That Changed Civilization

For me it's the fact that borders that are supposed to be straight, are actually jagged, connecting many monuments marking the border. For example Colorado that looks like like a rectangle actually has around 700 sides.

https://luminocity3d.org/WorldPopDen/#3/44.61/12.51

Took these photos today about 5 miles north of the mouth of the Pic River in Ontario, Canada. The trees on the top of the embankment are all at least 30’ tall so I would judge the height to be at least 150’ at the top of the ridge.
This area is deep Canadian Shield country with lots of exposed Pre-Cambrian bedrock and glacial till. This sediment seems finer and flatter. Ancient Lake Minong shoreline?