Complex sentence: In the first half of the 25th century, certain Terrans (inhabitants of Earth) formed the New Earth Organization ("NEO"), which planned to rebel against the rule of RAM and restore Earth to its former glory.
Split into simpler sentences: In the first half of the 25th century, certain Terrans (inhabitants of Earth) form the New Earth Organization ("NEO"). This society plans to rebel against the rule of RAM and restore Earth to its former glory.