Which organism has a central brain a. hydra b. fish c. sponge d. flatworm the real subject is science

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.

Which foreign policy initiative countered the spread of soviet influence by restricting the spread of communism? a. roosevelt corollary b. truman doctrine c. nullification proclamation d. good neighbor policy

An effect of the steamboat's popularity was that fewer people traveled by rail. o steam locomotives became less popular. people began to build canals in the united states and europe. o more people began to travel between the united states and europe.