The materials in the appendices supplement themes and points in other sections of the guide. Appendix 1 offers a chronology of crucial events from 1780 to the present. Appendix 2 contains passages from twenty key documents from modern Chinese history. Appendix 3 provides data on the major party congresses of the Nationalist Party and the Communist Party. Tables and charts in Appendix 4 supply key twentieth-century social and economic data.