July 31 in history: General Musharraf's emergency in Pakistan, hurricane sinks treasure ships and more

From Michael Phelps' Olympics record to Strategic Arms Reduction Treaty, here's what happened on this day in history

1715

Hurricane sinks 10 Spanish treasure ships near Florida

(Photograph:WION)

1917

 Apollo 15 is first used on Moon

(Photograph:WION)

1991

US and USSR sign Strategic Arms Reduction Treaty

(Photograph:WION)

2009

SC of Pakistan strikes down General Musharraf imposed emergency

(Photograph:WION)

2012

Michael Phelps sets record of highest medals tally in Olympics

(Photograph:WION)