Complex sentence: The decline in the price of petroleum and near-simultaneous failure of several downtown anchors placed the central business district into recession in the 1980s, and the downtown was revitalized again through various initiatives, including its second streetscaping project in 1992.
Split into simpler sentences: The decline in the price of petroleum and near-simultaneous failure of several downtown anchors placed the central business district into recession in the 1980s. The 1990s saw the revitalization of the downtown through various initiatives, including its second streetscaping project in 1992.