20
i will mark !
when brazil declared its independence, it was a unlike the spanish-speaking colonies, which became republics.

The Brazilian independence movement was achieved with almost no resistance from Portugal as the Portuguese king, Dom Pedro I had been told by his father that if independence must come to Brazil he should let it. So in essence, it was the only Latin American nation to achieve independence without bloodshed or conflict.

Explanation:

that would be the steamboat because none of the other things are forms of transportation