Complex sentence: On 16 June 1960, Makonde nationalists organized a demonstration in front of the Mueda District headquarters on the Mueda town square demanding independence from Portugal, apparently the district administrator had invited them to present their grievances.
Split into simpler sentences: On 16 June 1960, Makonde nationalists organized a demonstration in front of the Mueda District headquarters on the Mueda town square in order to demand independence from Portugal. Apparently the district administrator had invited them to present their grievances.