Which answer choice includes two obstacles that those building the Panama Canal had to overcome? frequent storms; wars

extreme heat; landslides

construction of locks; lack of workers

extreme cold; dust storms

I would say construction of locks; lack of workers

Explanation:

they did have workers but about 22,000 died while the construction of that canal due to sickness also organisation and engineering were problems soo that is the closest

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.

lancelot said to the beautiful ellen i c u r a b u t l n (i see you are a beauty lancelot was the greatest and worst of the knights who became the king's champion and undertook quests in the king's name. he became the adulterous lover of queen guinevere, and they had a son named galahad.