Complex sentence: The modern Institution of Incorporated Engineers (IIE) traces its heritage to The Vulcanic Society that was founded in 1884 and became the Junior Insitution of Engineers in 1902, which became the Institution of General Technican Engineers in 1970.
Split into simpler sentences: The modern Institution of Incorporated Engineers (IIE) traces its heritage to The Vulcanic Society that was founded in 1884. This society became the Junior Insitution of Engineers in 1902, which became the Institution of General Technican Engineers in 1970.