Which is the best example of how the physical geography of the region slowed the construction of the panama canal?
a) protests from the local citizens of panama interfered with american work schedules.
b) many workers were killed or sickened by malaria and yellow fever carried by mosquitoes.
c) arguments between government leaders of the united states and panama slowed its construction.
d) american contractors were forced to bring in new equipment to replace older, outdated french equipment.

It B. Many workers were killed or sickened by malaria and yellow fever carried by mosquitoes

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.