The montague fault formed at a boundary

The Japan Trench formed at a convergent boundary.

Explanation:

Japan trench is the oceanic trench division present in the pacific ring off fire located at the northeast of Japan. The trench subducts under the continental plate i.e. Okhotsk plate which is also a part of north America. One of the main cause behind repeated tsunamis and earthquake is the japan trench as it is associated with subduction zone were continuous movement takes place. Convergence of pacific plate and Okhotsk plate give rise to the japan trench.

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.