[Anglika]

What are the good things and bad things about Indonesia?
Indonesia is a nation in Southeast Asia comprised of about 17,000 islands, which it makes the world's largest archipelagic country.
If we go there, we will found [tense] so many good things such as a very good [beautiful/amazing/exciting] scenery and a potential financial economic [economic is an adjective - you need to say an economic .........] . Start from the air if you go by plane [what else can you do if you go by plane?] . You’ll see a green scenery down there. Because of Indonesia’s location is in a great geographic position, and tropical climate, so plants can grow easily. As an example, in Sumatra if we go through from Aceh to Lampung by car, you will found [tense] many varieties of trees that can make a potential financial income [an income does not need to be qualified by financial - it is a given for an income] for this country. And you’ll find the wild animal [only one?] too if you go to in a deep forest in Sumatra, such as Sumatra’s elephant, Sumatra’s Tiger, and Orangutan that we never seen in any other country. The good thing’s [this is possessive] doesn’t stop in Sumatra. If we go through [across the] Indonesian Sea, coast to coast from the south Java coast to Nusa Tenggara coast by ship, we will presented by fishes dance in the sea[check - this does not make sense] , and beautiful scenery of coral ecosystem. Wow, it can [tense] be a good tourism destination, you could diving if you want. Those are only a little bit good things [a few things] about Indonesia although we only see in nature aspect.[delete - unnecessary]
But behind that all beauties, there is [plural object > plural verb required] some of [possessive not required] bad things. One of them is incapability [inability OR incapacity] to manage the beauty. I still remember that Japan [Japan's OR the Japanese] Prime Minister said “Give me Sumatra! and I’ll make it becomes [become]Japan, and I’ll give Japan to Indonesia, it will become Sumatra.”. The most of Indonesian [most Indonesians] don’t care [for OR about] their surrounding environment. They can’t use their advantages maximally. Such as forest [Forests/The forest] in deep Sumatra should be like others forest arounds the world. It should be filled with loud noises of animals. But due to the carelessness[mismanagement/greed] like wild hunting and wildfire[delete - unnecessary] the forest becomes silent and bare. And what happened with the coral ecosystem? The bad Indonesian uses an easy and cheapest way to reach what they want [he wants - or change singular "Indonesian" to plural]. They use large trawling or (the worst is) bomb to catch fishes in the sea without thinking about the coral ecosystem down there. Whereas, If they are damage, an erosion can’t be avoid [Incomplete sentence]