What system allowed Southern colonies to succeed in growing crops like tobacco and rice?

This is the mountain range known as the alps. which of these statements regarding the alps is true? a) the alps are the largest mountain range in asia. b) the alps protect the roman empire from invasion. c) the alps were key in preventing england from being conquered in warfare. d) the alps prevented the roman empire from taking control of most of europe.

If a swimmer is traveling at a constant speed of 0.85 m/s, how long would it take to swim the length of a 50m olympic sized pool?

In the modern world, many countries with kings or queens have evolved into constitutional democracies. in these countries, monarchs are mostly