Answer the following questions using the drop-down menus. Why is a lock system used in the Panama Canal?
Which country failed in its attempt to build the Panama Canal?
Which two diseases were most problematic during the construction of the canal?
Approximately how many ships pass through the canal each day?

The canal has a lock system because the ships need to be raised high (85 ft) to the main elevation of the Panama Canal.

The country that failed was France.

The two diseases were yellow fever and malaria.

35-40 ships pass through each day.

Why is a lock system used in the Panama Canal?  to lift and lower ships

Which country failed in its attempt to build the Panama Canal?   France

Which two diseases were most problematic during the construction of the canal?   yellow fever and malaria  

Approximately how many ships pass through the canal each day?   40

Explanation:took test got it right on Edg

answer is a meeting of congress.

explanation:

hope my answer has you!