If you want to produce vehicles outside the developed world in 1900, you will have to produce vehicles much cheaper than you normally world, otherwise the population will not be able to afford them.
If your having trouble making a profit as a new player, try producing a small vehicle that is cheap to produce and cheap to design. It wont win any awards, but it will probably give you enough money to design a more expensive, better vehicle.
For Beginners, try a short game on the Easy difficulty in London or New York for a few years until you are confident enough to start a new game in a new location on Normal.
If your having trouble making a profit as a new player, try producing a small vehicle that is cheap to produce and cheap to design. It wont win any awards, but it will probably give you enough money to design a more expensive, better vehicle.
For Beginners, try a short game on the Easy difficulty in London or New York for a few years until you are confident enough to start a new game in a new location on Normal.