Complex sentence: While the Americans favored a low heavy cruiser style of motorcycle for straight line comfort, the Europeans preferred a higher, more nimble motorcycle better suited to the more twisting roads of their nations as there were no interstates/autobahn type roads until late 1950s.
Split into simpler sentences: While the Americans favored a low heavy cruiser style of motorcycle for straight line comfort, the Europeans preferred a higher, more nimble motorcycle better suited to the more twisting roads of their nations. There were no interstates/autobahn type roads until late 1950s.