In what ways has the evoulution of the welland canal impacted its current efficiency
How the modern locs work compared to past ones.
amount of locs per version.
Welland canal now
Seasonal differences
Why it was made
Elevation difference
Who wanted it to be made.
The challenges it solved.
how was the first welland canal made.
what tools were used.
The landslide/ people that died.
Routes and directions the different versions of the canal took
States about each version. materials, how many ships, width... exc
What each version solved from the previous