First of all, during the Vietnam War, the United States often dispatched bombers to bomb Vietnam, but after all, the accuracy of bombers was limited. In that country with underdeveloped missile technology, the United States accidentally dropped the bomb on Laos. Laos, of course, was angry and protested against the United States. At that time, the United States thought that Laos was just a tiny place, not only did it not apologize, but also ignored Laos' protests.
Secondly, Laos supports Vietnam. After all, many people were killed by bombs for no reason. Laos couldn't swallow this tone, so it supported Vietnam. The result was naturally discovered by Americans. Americans don't want to fight Laos, but Laos goes to support Vietnam, which makes the United States feel very humiliated. So naturally, Americans choose Vietnam and Laos to fight together. So in three days, two bombers were dispatched to bomb Laos, causing huge casualties and economic losses.
Finally, Laos was bombed by the United States in the Vietnam War, which led to the retrogression of the domestic economy. After all, when the cannon rings, there are two thousand gold. Moreover, there is no economic industry in Laos, which leads to the decline or even retrogression of Laos' economic development. So far, Laos is one of the poorest countries in the world.