How was china influenced by political boundaries, economic boundaries, social boundaries, and linguistic boundaries? i rly need help asap, thanks in advance! (if you don't know all boundaries, it's ok. at least knowing how one of these boundaries influenced china will help a lot).​

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.