Thomas Jefferson is the one most responsible for writing the Declaration of Independence.
- The king refused to assent to laws that were wholesome and necessary for the public good.
- The king had forbidden colonial governors to enact laws or implement laws without his assent (which, as the prior point noted, he was in no hurry to give).
- The king forced people to give up their rights to legislative assembly or forced legislative bodies to meet in difficult places that imposed hardships on them.
- The king dissolved legislative assemblies and then refused for a long time to have other assemblies elected.
- The king obstructed justice in the colonies and made judges dependent on his will alone for their salaries and their tenure in office.
- The king kept standing armies in place in the colonies in peacetime, without the consent of the colonial legislatures.
- The king imposed taxes without the colonists' consent.
There were more items listed by Jefferson, but you get the idea. He was justifying revolution by proving tyranny was standard operating procedure by the British monarchy.
One of the main things that the model T Ford tells us about life and events between the two world wars in the US was that people were becoming more "consumer based"--meaning that "regular" people were able to buy things like cars due to industrialization and streamlined production.
Industrialism contributed to imperialism in the 1800's because as industrialization continued, resources fell (Think Oil, metals etc.), the territories (states in this case) needed to expand so that they could get more resource income, making their governments capture new territories in order to continue creating a prospering country.
Imperialism is the act of taking over another nation via their government.
The civil war affected the North's economy poorly. When the first Confederate states split from the US, the US government lost tax income from those states. That tax income was needed in order to fund things such as the army, public schools, and many other parts. In order to understand the impact of states splitting from a nation, think about what would happen if South Florida succeeded from North Florida. The tax money that comes from Miami wouldn't fund the state government in Tallahassee and would poorly affect the economy of that state.