A coniferous forest contains evergreen trees that bear cones. Elegant pines grow in this biome, along with spruce, fir, and tamarack. In much of the northern forest, the conifers mingle with deciduous trees, particularly aspen, birch, sugar maple, and basswood.
The United States entered the Vietnam war to prevent the spread of communism. China was already a communist country, and the United States believed that China would spread it to other Asian countries if it did not intervene. Continue Reading.
Why did the US join NATO? The US joined NATO, because after WWII, President Truman needed to keep up the subterfuge that they needed an alliance, because the US citizens didn't know about the f â¦ ormation of the atomic bomb.