What happened in the Battle of Los Alamos between the United States and Mexico? Explain in details

Although a number of things brought about world war one there was one even that push to europe over the edge. what was that event?

The maps below show the middle east. which best explains how the green areas depicted in the image on the left are reflected in the population map on the right? populations are greater in fertile areas that are close to freshwater sources, which is why more people live near deserts. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near oceans. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near mountains. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near rivers.

What did the u.s. want to build on the land acquired through the gadsden purchase?