A blockade is a method used to prevent goods, services, or people from entering or leaving a specific area. This can be done by military forces, ships, or even by civilians. Blockades are often implemented during conflicts or wars to weaken an opponent by cutting off their supplies and resources. In addition to military blockades, there are also economic blockades, which restrict trade with a particular country or region. These can be imposed by governments to pressure a nation into changing its policies or behavior. Blockades can have significant impacts on the affected population, leading to shortages and economic hardship.