Which best describes a development that improved railroad safety? Railroads adopted standard time to coordinate schedules.
Railroads offered fold-down beds so that people could sleep more comfortably.
Companies standardized track technology so that they could use each other's tracks.
O Companies replaced hand-operated brakes with air brakes on trains.

everything about this just does not make sense. what is the question?

2: albert einstein was one of several german scientists who the allies defeat the nazis

explanation:

mark brainliest and have a great day!

i believe it would be capitalism

for the 2 countries u can do china and america because america has a democratic government while china has a communist government.

a democracy is a government run by the people either by directly voting or indirectly by electing representatives. an oligarchy is a government run by a few or a small group of people. a democracy and oligarchy are similar because both in an oligarchy and an indirect democracy, a small group of induvial determine the laws for a large group of people they are different because in an oligarchy it is easier to control and they do not have to answer to a large number of people in the country, unlike a democracy where they do have to answer to a large number of people an county that is a democracy would be the united states. a country that is an oligarchy would be the china.