Hey, I want to put in a peasant revolt in my little book, but also one I’m the history of it. The present times I’d say is on par with 1500’s England, and the peasants want more rights- what could that be? Also, the history would be about 100-200 years ago what would they want more that they got and have in present day? There is no history of serfdom in the country.
You have a lot going on here... I'm going to presume this is not set in our world, because you'd have a lot of historical resources.
First off, the 1500s England, that's Tudor times. If you're dealing with peasants, you're dealing mostly with farmers, since prior to the Industrial Revolution, 9 out of 10 people had to be farmers to produce enough food to keep specialists (shoemakers, woodwrights, blacksmiths, etc) able to work at their crafts full-time without also needing to be out amongst the fields & flocks.
The BBC did a series called Tudor Monastic Farm, and it was very well-done, with the historian & archaeologists going through the experimental archaeology efforts of recreating daily life. (The only thing they did not do was actually stay overnight on site for sleeping, due to the rules of the heritage trust for the buildings they were using.)
https://www.youtube.com/watch?v=yXVzSkfPX4g&list=PLjgZr0v9DXyK9Cc8PG0ZhDt2i2eQ_PEvg
That link will take you not only to the first in the series, but to the list of all episodes in the side-bar, too.
As you will see, mid-Tudor was a fairly prosperous time for most people. There may have been bad harvests, but there weren't many prolonged droughts, flooding rains, nor actual famines. So, presuming this area in your world doesn't have those concerns, what would the peasantry have to complain about, to the point of fomenting a revolt?
As for 100-200 years before, that would've put the timeline smack in the Black Death era--rising prosperity for the nobility, who DID have serfs, then suddenly 1 in 4 are dead, and the peasantry can literally leave and go find better-paying work elsewhere, bcause that 1 in 4 destroyed a lot of the knighthood and soldiers who could've otherwise run down the escaping serfs. That pretty much destroyed serfdom, because the peasantry had huge economic pressures they could bring to bear in leverage.
(Take note: history repeats, and a variant of this is happening right now. We need to use this leverage to destroy the capitalism-style nobles trying to bind us in serfdom.)
Anyway, you say there is no history of serfdom in this created country, and that is great! It means these people have always been counted as citizens and not as a half-step up from chattel / slaves. But...that still brings us back to the theme of what are they rebelling against?
Is someone trying to make them serfs? Are the nobles trying to underhandedly steal their land out from under them? Serfs did not own the land they tilled; they were bound to it by laws, basically chaining them in place as slaves, even though they were not to be mistreated as badly as slaves could be. Is someone trying to bind them to work for their local noble and punish them legally if they try to move away?
Is it something else, not tied to serfdom? (I poked at that set of questions right away since you brought it up, to see if the ideas is going to be introduced.) If not, then what are they rebelling against? What do they want? is it political upheaval? Is it religious upheaval?
What is being done to them that makes them not just discontent with their circumstances, but so incensed that they do band together to fight back?
If it's not set in our world, then you're maybe not going to be able to use the Black Death as the historical flashback...but then again, maybe it's the Purple Plague in modern days, and they're flashing back to previous eras when things were happy and healthy, as a strong contrast to current times?
I cannot say either way. Only you can decide all of that.