Bridges
people build briges
On rivers
they build dams
Dams are built to create reservoirs.
Invention of the steam engine allowed manufacturers to build their factories away from rivers.
people build briges
Rivers
bridges...
Settlers in the 18th and 19th centuries often build communities along rivers because it was easy to travel up and down the rivers to trade and barter goods.
Build dams etc
Bridges
A bridge.