I need help please I don’t understand

answer; native americans who sometimes actively impeded railroad construction; physical obstacles like rivers and canyons, and

the first plants to make the transition

explanation:

chinese civil war took place over a long period of time between 1927 and 1950. the war was interrupted when japan invaded china in 1936 and by world war ii. the war was fought between the nationalist government of china, also called the kuomintang (kmt), and the communist party of china (cpc).