Complex sentence: Monster.com is an employment website based in the United States which is is owned and operated by Monster Worldwide, Inc.It was created in 1999 through the merger of The Monster Board (TMB) and Online Career Center (OCC).
Split into simpler sentences: Monster.com is an employment website based in the United States. It is owned and operated by Monster Worldwide, Inc. It was created in 1999 through the merger of The Monster Board (TMB) and Online Career Center (OCC).