What is one significant way transportation changed in the united states in the first half of the nineteenth century?

a.) canals were built, primarily in the north.
b.) roads were built, primarily in the south.
c.) railways were built, only in the north.
d.) railways were built, only in the south.

Option A, canals were built, primarily in the North, is the right answer.

Explanation:

Improvements in transportation became visible in the early phase of the Nineteenth Century. All the developments made in the field of transportation such as roads, canals, steamboats and railroads positively affected the economy of the United States. Initially, rivers and roads and later on canals and railroads helped people, agricultural and manufactured goods to move from one place to another. Such canals were primarily built in the North which also contributed to the jealousies and rivalries that later caused the Civil War.

jewish people, gypsies, and political opponents.