Add punctuation: Pittsburgh is a major port city on the Ohio River which is the financial and commercial center of America founded in 1761
A: Pittsburgh is a major port city on the Ohio River, which is the financial and commercial center of America founded in 1761.

Add punctuation: In principle these requirements imply at least fulfilment of current EU legislation with particular focus on use of resources planning and current rules on working hours together with the transport technology used
A: In principle, these requirements imply at least fulfilment of current EU legislation, with particular focus on use of resources, planning and current rules on working hours, together with the transport technology used.

Add punctuation: Internal dimensions 210 x 129 x 45 cm
A:
Internal dimensions: 210 x 129 x 45 cm