7-Eleven has accelerated its U.S. expansion by entering into the largest acquisition in its history.

The c-store retailer has agreed to buy the Sunoco chain of gas stations, which includes some 1,108 convenience stores located in 18 states, for a reported $3.3 billion.

“This acquisition supports our growth strategy in key geographic areas including Florida, mid-Atlantic states, Northeast states, and Central Texas,” said Joe DePinto, president and CEO of 7-Eleven Inc. “It also provides 7-Eleven entry into Houston, the 4th largest city in the United States, and a strong presence in Corpus…