Add spaces: In1836aprogramfortheenlargementoftheErieCanaltoaseventyfootwidthandasevenfootdepthwasinitiated.

Answer: In 1836 a program for the enlargement of the Erie Canal to a seventy foot width and a seven foot depth was initiated.

Add spaces: TheChineseairportauthoritieshavenotreleasedanycomment,asfeasible,ancheseèstataapertaun’inchiestacheindagheràsull’avvenuto.

Answer: The Chinese airport authorities have not released any comment, as feasible, anche se è stata aperta un’inchiesta che indagherà sull’avvenuto.

Add spaces: 2.Excavationoftrenchforballoonexperiment2mdeep.

Answer:
2. Excavation of trench for balloon experiment 2 m deep.