Today I wrote a summary about a text on the first manned flight and the reasons why the Wright brothers succeeded.
Iīm looking forward to your proofreading.
"The succeed to achieve the first manned flight by the brothers Wright is often explain by three main points.
First the brothers worked in a team; therefore, they helped each others with new ideas one might never got himself.
Moreover, they didnīt concentrate to much on the theoretics of flight like most other engineerers. In spite of improvements based on trial an error results, they got ahead of their competitiors.
Last the Wrights used to live at the right time. Recently a new motor had been introduced that presented an appropiate weight to power relation for flying"
Looks like Iīve still got a lot work to do
Could you please tell me, what is wrong about "didn't"? Is it just the fact that you should not write short forms, but "did not"?