What does the map indicate about the spread of islam from 622 ad through 732 ad

Why was the agricultural revolution more successful in england than in the rest of europe?

World war 2 was caused, in part, by which of these factors?

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.