谁可以帮我写most countries celebrate traditional festivals of some kind.What are the benefit英语高手们,.most countries celebrate traditional festivals of some kind.What are the benefits of doing this?Are there any disadvantage?

advantages for celebrating the festivals are listed in the following:
firstly,they can help us bolster nationalism and cohesion, both of which can not be defeated by anything but ourselves.
secondly, in terms of economic development, the festivals may boost our level of advancing our national economy in the short time, as we always say the festival economy.
however, everything can not be itself without problems.
to begin with,the festival can lead to traffic jam, which creates short-time effects on living conditions of our citizens.
and then some conflicts may occurred during the period. some resource not only authority but also natural resources may be overburdened.
the above advantages and disadvantages of festival should treated equally to prevent their interchange transition