What causes clean change ?

How has the geography of india made it difficult for its people to expand before modern technology?

Read the article titled "castro resigns." why did the us impose trade sanctions against cuba in 1962?

The distance a car travels between the time the driver decides to stop the car and the time the driver puts on brakes is called the reaction distance. how does the reaction distance change with speed? a.reaction distance decreases with with speed b.reaction distance stays the same with speed c.reaction distance increases with speed. d.there is not enough information to answer the question