How have the topics that historians study expanded in the past 40 years?

Which ics functional area sets the incident objectives, strategies, and priorities, and has overall responsibility for the incident a. command b. operations c. logistics d. finance/administration

Of the following choices, which ones are characteristics of west african society? select all that apply. a. arabic was the main language used when trading with other societies. b. christianity was the only religion practiced in villages. c. slaves had no rights and were only given specific farming tasks. d. skilled workers were a higher level in the caste system than traders. e. religious rituals encouraged the honoring of ancestors.

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.