What is a result of tin mining?
- more oil spills in the south china sea
- increased smog clouds over manila
- decline of fishing in the mekong river
- development of huge wastelands in malaysia

( i have four more questions coming up about southeast asia btw)

New communication technologies, improved transportation, and advanced military weapons made it possible for countries to speed up acquiring territory. rule large amounts of territory. fight off competition from opposing nations. expand their economies, which aided in conguest.