Ports and "trade"

[mr.qzit 2]

I propose to improve the ports by adding 2 things: a trade card and “trade”, but how will this work: the country produces/extracts a resource such as timber, coal, diamonds, etc. they can be sold to another country, in which way we explore the port, then ships, and then we can go to the port window and load the resource into the ship, then send it to another country under an agreement and earn the amount that we agreed on in advance (TRADE ONLY RESOURCES AND NOTHING ELSE) the port can develop at several levels; The number of spaces for ships and cargo depends on the level. As for the trading card, there will be a map on which the ports are marked and a request for the purchase and sale of cargo (resource) is made on it. Then there will be seasons when it is more expensive and cheaper, for example, if you sell coal in the summer, it will be cheaper than in the winter. All