The response describes all three regions and the main trends, with a clear overview of changing leadership. Most figures are supported by the chart, but the 1840 rest-of-the-world bar is at 10%, rather than just above it. The 1880 snapshot and the shared lead in 1960 would strengthen the comparisons.
8.0Ideas progress logically from a clear overview through chronological detail, with cohesive devices such as 'Consequently', 'Conversely', and 'Following this' used flexibly and naturally.
8.0Vocabulary is flexible and precise for a data summary, using terms like 'dramatic resurgence', 'peaking', and 'accounted for', though some intensifiers such as 'dramatic' recur.
8.0Relative clauses, participial structures and subordinate clauses show a wide grammatical range with strong control. The sentences are generally accurate; simplifying the long Asia recovery sentence would improve ease of reading rather than correct a demonstrated grammatical error.
8.0