I think that #3 would be a strong thesis since it introduces the topic of voting and the Civil Rights Movement.
The answer is; riding without one is dangerous and reckless.
If you don’t learn history you are condemned to repeat it. Children sometimes don’t learn and repeat bad things so not learning history is kinda like that.
The difference between the split ring commutator in a DC motor and the slips rings in an AC generator can be tricky. The split ring makes changes in the rotation every so often. A slip ring just stays in place and is only used as a connector. So a slip ring is for DC, whereas the split ring is used for AC.
