What part did the salve trade play in europeans take control of much of africa in the 1800s

Which of the following descriptions is an example of the curtual diffusion

According to campbell, why did the british take control of oudh?

Which answer best describes an advantage of shipping goods by canal? most towns would rather have canals than noisy railroads. goods could travel very fast downstream in the canal system. travelling by boat is a much more relaxing way to transport goods. heavy loads of goods could travel by boat more easily than if pulled by horses.