It is C. The Secretary of State William Seward argued that the U.S. should buy Alaska because U.S. wants expand, and Alaska had valuable resources.
Sahel is a very desert like area. It is hot but not as humid as a rain forest would be because of the lack of water.
Answer:
Separation of Powers means that the three branches of government are separated. The three branches are. the Legislative- the part that makes laws. the Executive - the part that carries out (executes) the laws, the Judicial Branch - the courts that decide if the law has been broken.
hope this was helpful! c: