In an $80 billion deal these 2 oil companies joined forces in 1999 in the biggest merger up to that time
The decision concluded the 
government's 4 1/2-year suit under the Sherman Antitrust Act against the 
Standard Oil Co. [DOC] [TLE] - THE EXXON-MOBIL MERGER - US Government Publishing Office [PAR] 1 March 11, 1999.