Read each sentence to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. Mark the part with the error as your answer. If there is no error, mark ‘No error’ as your answer (Ignore the errors of punctuation, if any).
The trade disputes have lead to (1) / higher tariffs by the two countries (2) / and created unease over (3) / the depth of their security alliance. (4) / No error (5)