The main way how Marxism differs from capitalism is through a lack of a free market economy where natural competition between people who would produce something and people who would consume something would dictate the price and availability of goods.
The correct answer is the sixth century
Secondary sources draw on primary sources. They may comment on primary sources, or use the evidence from primary sources to construct an argument. Books or journal articles that analyze, critique, or synthesize a range of sources are examples of secondary sources.
I think it would be B)International
The four main causes were: militarism, alliances, imperialism and nationalism - or as an acronym, M-A-I-N (this made it much easier for me to remember the causes)