Answer:
The Navigation Act of 1660 forbade colonists from trading specific items such as sugar and cotton w/ any country other than England. You have to pass through English ports. Many colonists wanted more freedom to buy or sell goods wherever they could get the best price.
It upset the balance of free and slave states in the US.
I'm sure that it is the US had abundant natural resources.
British Spain established the world's largest empire.
Answer:
Riders are usually created as a tactic to pass a controversial provision that would not pass as its own bill. Occasionally, a controversial provision is attached to a bill not to be passed itself but to prevent the bill from being passed (in which case it is called a wrecking amendment or poison pill).
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hope this helped