The industrial revolution began in Great Britain as it had most coal and iron which enabled it to build factories and machines. It spread from Britain towards Europe, where it mostly developed in Germany and it also spread into the US.
Venice, Italy is built across 120 islands
command economy is where a central government makes all economic decisions. The government or a collective owns the land and the means of production.
Cause..... The finding of gold made many people move towards the west, and they also brought their beliefs about slavery. Soon, they asked for ratification (when they reached the requirement) and had to choose to be either a free or slave state, which would have offset the balance between the amount of free and slave states.
Because... Many people wanted to become rich, and so they would risk everything they had and their lives to get their chance at a new life and to strike it rich.
Effect... As more people wanted to join the statehood, they had to choose either to register the state as a free-state or slave-state. This ended up effecting how the South and North felt, and eventually help lead the nation into a civil war. This then led to the end of slavery and the beginning of the Reconstruction Era.
hope this helps