I'm confident it is A.<span>The price of agricultural items and minerals increased compared to pre-war days.</span>
Aside from a general curiosity about space, the United States wanted to go to space because the Russians were trying to get there too, and we were in a "cold" war with them.
wood, a renewable resource. It is the first fuel that man knew in the world. ... Unlike coal or oil, wood can be obtained almost anywhere you live.
Its happen cultural diffusion and from trade people can earn money
