These are the two main natural hazards that threaten the islands of the caribbean.

hurricanes
landslides
tornadoes
tsunamis
volcanoes

it is hurricanes and volcanos

hope this helps

explanation:

there are two statements that are incorrect.

1. the marshall plan was a lend lease program. it was an economic plan that europe redevelop itself after wwii.

2. einstein didn't really do anything to further the allied cause in building the bomb. he merely sent a letter to fdr telling him (in 1939) that if the united states entered the war, perhaps it would be wise to build the bomb before germany did. i would say this answer is incorrect, but when america entered the war 2 years later, fdr thought it might be a good idea to take einstein's advice.

the 4th choice is definitely so wrong that is likely the single answer of this question

federal power is further limited with a system of checks and balances that gives each branch of government a measure of power over the others.

explanation: