In which of the following did engineers make advances during tang and song china? select all that apply. silver mining masonry flood control irrigation someone that knows what they're talking about .

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explanation:

the correct answer is d

a conference committee is a group of congress representatives appointed by the senate and the house to reach an agreement over a bill that had different versions in each chamber. this is due to the fact that, to pass a law. both the house and the senate must agree on the exact same content and wording of the bill to present it to the president.