BP has reached a historic agreement with five Gulf States to settle the claims made against the company from a massive oil spill in 2010. Take a look back at history's worst oil disasters.
7. ABT Summer (80 million gallons) -- The Liberian supertanker ABT Summer exploded off the coast of Angola on May 28, 1991, killing five crew members. Millions of gallons of oil leaked into the Atlantic Ocean.