How did the physical environment of panama affect the building of the canal?

a) underground oil reserves made digging the canal difficult
b) cold, wet weather allowed diseases to spread quickly.
c) regular floods made canal access easier for engineers.
d) rugged mountain terrain made construction more challenging.

The answer to this is B) Cold, wet weather allowed diseases to spread quickly.

B) Cold, wet weather allowed diseases to spread quickly.

Explanation:

At the beginning of the 20th century, the construction of the Panama Canal was paralyzed. What currently appears on a sea route that on the coasts of the Atlantic Ocean and the Pacific, previously, in a breeding ground for diseases, in particular, yellow fever. Yellow fever, or Siam's disease, is a vector-borne viral disease that causes high fever, vomiting and severe pain. If you do not receive treatment, the disease progresses and wreaks havoc on the liver, which causes the disease, severe abdominal pain, internal bleeding and, ultimately, death. This disease claimed the lives of thousands of workers during the construction of the Panama Canal. If they had not been launched in research focused on the eradication of this disease, more workers would have died and this key trade route has not been established.

all of the choices are correct

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.