Question: The Amazon River is notable for the absence of what?
Answer: Bridges. Despite being 4,300 miles long with a watershed that covers nine countries, the Amazon has no bridges across it. That’s due to two main factors: First, construction would be extremely challenging. The river’s water level rises and falls dramatically throughout the year and the riverbanks are soft, eroding marshland. Second, there’s little demand for a bridge across the Amazon because the river meanders through areas that are sparsely populated. People who want to cross it take boats and ferries.
