you find it in the inventors time period
In time tangled island.
Use the swing thing to move the platform near the peace medal.
What peace medal? What peace medal?
The peace medal on time tangled island is on Leonardo Davinci's part of the island when you climb to the top of the waterfall and walk over to this mechanism and you will see it hanging there.
At Time Tangled Island, at Leo's shop, you have to jump up on the furthest wood slate at the top. Then, jump down, and go on the furthest one wood slate on the bottom. Then, you have to jump and get the "Peace Medal". By the way, it is a medal. Finally, go to the "Lewis and Clark" Time Island, click on Lewis and give him the medal
You find the peace medal and give it to them.
You find the notebook and get the wings and fly
Complete a mission on a island like Early Poptropica
Because you have to get Leo's journal then he will give you gliders then you go back were the peace medal is under you then jump and go towards it. Hooray you got the peace medal for Lewis and clark.
you go to Leonardo da vinci's workshop by the levers and jump on the top lever. the bottom one should be in the middle and get on it .and then jump to the peace medal.
you use your glider and go down then swoop over to it
if the peace medal is not there try going on to another one of the time thingies on the clock thing because that has never happened to me