Complex sentence: The museum houses objects from the culture of the Native American populations, mainly from Rio Grande do Sul, including missionary statues as well as images, books, tools, and sacred altars of the 20th century.
Split into simpler sentences: The museum houses objects from the culture of the Native American populations, mainly the ones in Rio Grande do Sul. The collection comprises missionary statues as well as images, books, tools, and sacred altars of the 20th century.