Added a lot of very sketchy design documentation

Further work needed!

doc/Playable Territories.md

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+## Playable Territories
+
+The following territories will be playable (i.e. controllable by a player) in the game. It should be possible to play in a small-group collaborative multiplayer arrangement, where different players control different playable territories.
+
+### Africa
+
+Treated as one polity for the purposes of the game.
+
+#### Starting Conditions
+
+##### Agriculture
+
+Low productivity, small surplus, low dependence on fossil fuels and fertilisers. Vulnerable to desertification. Significant areas of forest (23% cover) but currently mostly of low productivity.
+
+##### Energy
+
+Low energy use per capita. Vast potential for solar virtually everywhere, especially in desert areas, but this is largely untapped.
+
+##### Industry
+
+Limited, low productivity.
+
+##### Military
+
+Small, disorganised, not significantly problematic.
+
+##### Population
+
+1.2 billion, growing significantly, generally very poor, relatively low wealth disparity. Quite low levels of economic improvement are likely to ensure social stability.
+
+##### Transport
+
+Limited, less dependent on fossil fuel than in richer places, but poor infrastructure.
+
+### America (United States)
+
+Including Canada and possibly Mexico for the purposes of the game.
+
+#### Starting Conditions
+
+##### Agriculture
+
+Very productive, substantial surplus, but highly dependent on fossil energy, fertilisers, depleting aquifers. Vulnerable to desertification. 36% forest cover.
+
+##### Energy
+
+Very high energy use per capit., Very substantial use of fossil fuels in all sectors. Good potential for solar especially in south west.
+
+##### Industry
+
+Productive, flexible, innovative, heavily dependent on fossil energy, plastics.
+
+##### Military
+
+Enormous, beyond effective democratic control, hugely polluting. Huge stocks of armaments. In the event of civil war, might easily fall apart into warring factions.
+
+##### Population
+
+500 million, overall rich but incomes extremely skewed and with a significant majority very poor. Politically volatile, heavily armed, civil disorder likely.
+
+##### Transport
+
+Heavily biased to individual transportation, cities low density and not easily amenable to efficient mass transport systems.
+
+### Brazil
+
+Including most of South America for the purposes of the game.
+
+#### Starting Conditions
+
+##### Agriculture
+
+Generally low productivity, but considerable surplus. Large forests (62% cover) of generally low productivity, very vulnerable to widespread desertification particularly if deforestation continues.
+
+##### Energy
+
+Generally low energy use per capita, mainly fossil fuels. Good potential for solar, hydro and wind energy.
+
+##### Industry
+
+Limited, low productivity.
+
+##### Military
+
+Large, beyond effective government control, but poorly organised and not heavily armed.
+
+##### Population
+
+450 million, growing, generally poor, very high wealth disparity. High risk of civil disorder.
+
+##### Transport
+
+Limited infrastructure, mainly individual fossil fuelled vehicles, but cities generally compact and amenable to mass transit.
+
+### China
+
+#### Starting Conditions
+
+##### Agriculture
+
+Generally productive, some surplus. Risk of desertification especially in the west. 22% forest cover.
+
+##### Energy
+
+Mix of energy systems from the very worst to the very best, but generally modernising rapidly.
+
+##### Industry
+
+Vast, extremely productive, flexible, but currently extremely polluting. Considerable production of plastics including single use plastics from fossil feedstocks.
+
+##### Military
+
+Very large, very heavily armed, but disciplined and under tight government control.
+
+##### Population
+
+1,400 million, fairly stable. Generally lesser wealth disparity than in other economies. Low risk of civil disorder.
+
+##### Transport
+
+Relatively good rail and mass transit infrastructure, lower dependence on individual fossil fuel transport than some other economies. Infrastructure generally good.
+
+### Europe
+
+#### Starting Conditions
+
+##### Agriculture
+
+Very productive, high dependence on fossil fuels and fertilisers. Some surplus. Low risk of desertification. 38% forest cover.
+
+##### Energy
+
+Mixed, modernising rapidly, but still high dependence on fossil fuels. No especially good potential for renewable energy generation except in the north west.
+
+##### Industry
+
+Large, high productivity, possibly less flexible. Very large car industry which may be resistant to change.
+
+##### Military
+
+Relatively modern and well equipped but not large; generally good discipline and government control.
+
+##### Population
+
+750 million, generally wealthy, wealth disparities lower than in most other areas. Moderate potential for civil disorder.
+
+##### Transport
+
+Heavily biased to individual private motor vehicles, but good rail infrastructure and generally compact cities with good mass transit systems. Overall exceptionally good transport infrastructure.
+
+### India
+
+#### Starting Conditions
+
+##### Agriculture
+
+Generally lower productivity, some surplus, labour intensive, less use of fossil fuels than richer territories. 21% forest cover.
+
+##### Energy
+
+Significant use of coal, but good potential for solar energy virtually everywhere.
+
+##### Industry
+
+Growing industrial production, much of it dirty.
+
+##### Military
+
+Large but not especially well equipped.
+
+##### Population
+
+1,380 million, growing steadily, generally poor but with huge wealth disparities.
+
+##### Transport
+
+Railway network exists but is I think mostly old; lower proportion of the population has access to private motor vehicles.
+
+### Russia
+
+#### Starting Conditions
+
+##### Agriculture
+
+Average productivity, some surplus, much use of fossil fuels and fertilisers.
+
+##### Energy
+
+
+
+##### Industry
+
+##### Military
+
+##### Population
+
+##### Transport
+
+### Saudi Arabia
+
+Including the whole of the Arabian peninsula, Syria and Iraq.
+
+#### Starting Conditions
+
+##### Agriculture
+
+Virtually none, substantial food deficit, very little forest. Soils generally arid.
+
+##### Energy
+
+Currently, vast production of fossil fuels, mainly for export. Vast potential for solar energy but this is as yet largely untapped.
+
+##### Industry
+
+Limited.
+
+##### Military
+
+Modern and extremely well equipped but not large.
+
+##### Population
+
+140 million, growing rapidly. Severe social tensions despite repression; potentially volatile.
+
+##### Transport
+
+Widespread use of private motor transport.