Which transition would work best between these sentences?

Canals and railroads lessened the cost of moving goods. Prices fell on goods from across the country due to lower shipping costs.

However
Undeniably
As a result
For example

Question

Which transition would work best between these sentences?

Canals and railroads lessened the cost of moving goods. Prices fell on goods from across the country due to lower shipping costs.

However
 Undeniably
 As a result
 For example

Mercury · Answer

notice how there is a cause-and-effect relationship between the two sentences. which transition would best indicate this fact?

Vocaloid · Answer

Moved to English