The right brothers had there flight there like the first airplane flight was there
There were several disadvantages of early forms of money like the limestone, cattle and shells. Firstly they were really tough to transport from one place to another because of the huge size. Secondly these kind of money were very rare and so it was highly difficult to find them.
Trade enhances economies through the creation of jobs, and the sale of the items. Can't have an economy without buying and selling. Trading is usually a positive thing, that being said certain types of trade can actually hurt jobs. For instance, when more modern clothing was invented and sold, lots of people selling animal skin clothing and such probably had to find a new way to make a living.
Hmm. I'm not sure if you would agree iwth the topics that I'm giving but I'll try my best.
You can write about...
Medieval times
How the world has changed. As in like, before and after
Tools or other objects that existed before but dont exist now
What it would have been like if people back then had the stuff we had now. As in, would there have been a change in how they lived? How would it help them?
Should people have been treated differently?
What each level of government meant (depending on where or which time your writing about)
Thats all I can think of.. I hope this helped!