Complex sentence: Finally, after extensive negotiations in which Du Tisne resorted to threats that the French would suspend trade relations, he was allowed to continue, but he was allowed to take only three guns, trade goods, and his interpreter.
Split into simpler sentences: Finally, after extensive negotiations in which Du Tisne resorted to threats that the French would suspend trade relations, he was allowed to continue. He was permitted to take only three guns, trade goods, and his interpreter.