Complex sentence: The story is set in the Rhondda Valley in the early 1930s, and chronicles the trials and tribulations of the peoples set against the backdrop of the aftermath of the 1926 United Kingdom General Strike and the Great Depression in the United Kingdom in the South Wales Valleys.
Split into simpler sentences: The story is set in the Rhondda Valley in the early 1930s. It chronicles the trials and tribulations of the peoples, set against the backdrop of the aftermath of the 1926 United Kingdom General Strike and the Great Depression in the United Kingdom in the South Wales Valleys.