Answer: The reason America became involved in WWI was because Germany started sinking American merchant ships around the British isles
Explanation: Originally, America wanted nothing to to with the war because they weren't concerned about about events and alliances in Europe, and thus stayed out of the war. But eventually German forced our hand and we joined.
Answer:
Native American cultures shared two of the four characteristics with Egyptians. They had irrigation systems with complex canals to move water from the rivers into their fields. They also had road networks that evolved from simple footpaths to trails later on.