1. Charles I ruled without Parliament for 11 years.
2. Charles I accepted the Petition of Right. The Roundheads defeated the Royalists and England became a commonwealth.
3. Charles I convened Parliament to raise taxes to crush a revolt in Scotland.
4. Supporters of Charles I, the Royalists, engaged in a civil war with the Roundheads, supporters of Parliament.
Protestors of the Vietnam war were shot at and 4 were killed by the Ohio National Guard
I'm not sure if any were begun in 1775. The American Revolution was occurring at the time but it started in 1760's the sugar and stamp acts were in 1764 and 1765, While the Townsend act was in 1770. The declaration wasn't even started until 1817.
A main cause of the trade was the colonies that European countries were starting to develop. In America, for instance, which was a colony of England, there was a demand for many labourers for the sugar, tobacco and cotton plantations. Paid labourers were too expensive, and the indigenous people had largely been wiped out by disease and conflict, so the colonisers turned to Africa to provide cheap labour in the form of slaves.