How did the alliance system to bring about world war one

How did the alliance system cause ww1?Since Serbia and Russia were very close friends and allies, Russia declared war on Austria-Hungary. Germany then declared war on Russia. ... Before World War I, many of the major European powers were involved in two strategic alliances. The first of these two was the "Triple Alliance" or "Triplice."

The second , larger puritan colony of massachusetts bay was conceived as a "city upon a hill". but it also struggled with internal turmoil like the salem witch trials and external conflicts like king philip's (metacom's) war.