Can someone please help me with these two questions.

This chart shows american troop strength during what conflict? a) gulf war b) korean war c) vietnam war d) world war ii

Select the correct answer. after months of heavy rains, a farmer noticed a steady drop in crop production. upon testing the farmland, it was found the soil was severely lacking nutrients. which of the following explains the loss of nutrients from the soil? a. drought b. drainage basin c. leaching d. water shedding

What was a immediate cause of the panic of 1837