Answer: Germany
Explanation: Germany seting the comands of unrestricted sumbarine warfare was one reason, unrestricted sumbarine warfare sunck any ships aiding the allies. A nother factor was the Zimmermann Telegram which germany sent to mexico to invade the united states.
The answer is B: Tycho Brahe. Over a twenty year period of time, Tycho Brahe made consistent observations which supported the heliocentric theory proposed earlier by Copernicus.
The Chinese worked on railroads when they migrated to america
Roger Williams. Founded those is as