Population Pyramid's for following places

Today in human geography with Mr. Schick we discussed more about population pyramids. We continued to go over how a population pyramid can either be a Christmas tree, a box, or a cup,  however they can also be undefined which is were it follows no pattern like the following patterns. Also in class today we looked at the worlds population pyramid and what it will look like when we are around sixty and it was pretty cool. I got to see how when i'm old the population will grow at an astonishing rate from what it is now, and that Nigeria will actually have one of the largest populations due to how fast they are reproducing. But the united states will continue to grow as a box so that we are a developed nation with a slow birth rate.Anyway we also have the test this Thursday and i feel pretty comfortable with what i have to know, as of just knowing how to navigate the world fact book.