Question

roads made of logs placed side - by - side, perpendicular to the direction of the road and located in swampy, soft and muddy low areas.
a road able to support heavy loads. it was made out of crushed, packed stones/gravel and clay.
choose
choose
national road
early railroad
turnpike
lock
freight boat
macadam road
state boat
corduroy road
packet boat

Explanation:

First Matching (Roads made of logs...):

A Corduroy Road is defined as a road constructed with logs placed side - by - side, perpendicular to the road's direction, typically used in swampy, soft, and muddy areas. This matches the description in the first statement.

A Macadam Road is made of crushed, packed stones/gravel and clay, and is designed to support heavy loads. This fits the description of the second road - related statement.

Answer:

Corduroy Road

Second Matching (A road able to support heavy loads...):