Complex sentence: The history of fly tying (and fly design) runs concurrent to the evolution and history of fly fishing, although from mid- 19th century to present times basic fly-tying methods have not changed dramatically.
Split into simpler sentences: The history of fly tying (and fly design) runs concurrent to the evolution and history of fly fishing. Although from mid- 19th century to present times, basic fly-tying methods have not changed dramatically.