Because it is blocked from marine resources, the marine could not be trading too. Countries with coasts tend to be wealthy, and has a population of more than countries with no exit to the sea. Therefore, the solution is.
It will be blocked from marine resources, but also makes it impossible to trade by sea as well. The country has a coastline tends to be richer and more populous landlocked country. So the solution is
Because it is blocked from the marine resource and marine cannot trade. Countries with the coast tend to be richer and with a population of more than countries that there"s no way out to sea. So how to solve the problem.