Relatively straight borders running north/south

We're always up for a good laugh, but, seriously, refrain from posting silly or answers. keep the quality of high by following the rules and posting thoughtful answers.

You must all emergency vehicles using a siren or flashing lights. a. honk to make your position known to b. follow c. yield the right-of-way to d. drive around

Identify one similarity between china and europe that explains their decisions on wether to explore or conquer lands around the indian ocean