A landlocked country is a nation that is entirely surrounded by land and does not have any coastline or access to an ocean. This geographical feature can impact trade, transportation, and economic development, as these countries rely on neighboring nations for access to ports and shipping routes. Examples of landlocked countries include Switzerland, Austria, and Mali. These countries often develop strong relationships with their coastal neighbors to facilitate trade and transport goods. Additionally, landlocked countries may invest in infrastructure, such as railways and roads, to improve connectivity and access to international markets.