I would like you to check this essay if possible.

I'm pretty sure there would be loads of mistakes so don't hesitate to reply and correct them (like the words in bold)

Thanks to all of you

Mr. Head teacher:

I am writing to you in order to request your support and a small economic help to give a boost to the ensuing matter:

I would like to travel abroad to tropical countries for just a couple of weeks to investigate thoroughly the origin, development and spread of most tropical diseases which also result to be the deathliest ones since they have wroughted the last world pandemics.

The information gathered and all the possible discoveries made will be used to develope a doctoral thesis with which I hope I will reach the range of “Natural Sciences Doctor” after a restless decade devoted to their study.
Moreover, in that case I solemly promise to write an article in the school magazine each fortnight and rise even more its world-known prestige this way.

However, there would be no way to set this project in motion without your support so I hope you agree to.
I am looking forward to hearing from you.

Yours faithfully,

Gustavo