Complex sentence: On 9 March 1945, a nationalist group declared Laos once more independent, with Luang Prabang as its capital but on 7 April 1945 two battalions of Japanese troops occupied the city.
Split into simpler sentences: On 9 March 1945, a nationalist group declared Laos once more independent, with Luang Prabang as its capital. On 7 April 1945 two battalions of Japanese troops occupied the city.