I assume there is a graph or diagram you are not posting
Homestead Act accelerated the settlement of the western territory by granting adult heads of families 160 acres of surveyed public land for a minimal filing fee and 5 years of continuous residence on that land.
The answer is of course B - water.
Japan is consisted out of four big islands (Honshu, Hokkaido, Shikoku, and Kyushu). While each of them also has their own small characteristics, separate from each other, Japan has in general been isolated due to its specific geographical environment. Not being connected to any landmass such as neighbouring China, the only contact they could have had was by boat. And travelling by boat has always been more difficult compared to packing your stuff and going somewhere.
Answer:
Is it too late to answer this