Why does zinn suggest are the real reason the u. s entered the war

the answer is: the sesquicentennial of the american civil war is an occasion to consider the legacy of that great conflict. this legacy is our inheritance, and despite many indelible features, we continue to negotiate the resolution of that conflict. the civil war was fought over slavery, but not always on behalf of slaves

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.