PLEASE HELP! I'll mark the correct answer brainliest. 1. What was the rise and goals of nationalist leaders in the post-war era and their role on their societies?
2. What were the causes and effects of post-World War II economic and demographic changes?

1. The rise of nationalism in Europe initiated with the Spring of Nations in 1848. American political science professor Leon Baradat has argued that "nationalism calls on people to identify with the interests of their national group and to support the creation of a state a nation state to support those interests. Nationalism was the ideological impetus that, in a few decades, transformed Europe. Rule by monarchies and foreign control of territory was replaced by self-determination and newly formed national governments.[1] Some countries, such as Germany and Italy were formed by uniting various regional states with a common national identity. Others, such as Greece, Serbia, Poland, Romania and Bulgaria, were formed by uprisings against the Russian Empire.

2.

The post–World War II economic expansion, also known as the postwar economic boom or the Golden Age of Capitalism,[1][2] was a broad period of worldwide economic expansion beginning after World War II and ending with the 1973–1975 recession.[1] The United States, Soviet Union and Western European and East Asian countries in particular experienced unusually high and sustained growth, together with full employment. Contrary to early predictions, this high growth also included many countries that had been devastated by the war, such as Japan (Japanese economic miracle), West Germany and Austria (Wirtschaftswunder), South Korea (Miracle on the Han River), Belgium (Belgian economic miracle), France (Trente Glorieuses), Italy (Italian economic miracle) and Greece (Greek economic miracle). Even countries that were relatively unaffected by the war such as Sweden (Record years) experienced considerable economic growth.

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.

that would be the steamboat because none of the other things are forms of transportation