What development between 1900 and 1920 led to improvements in livestock productivity?

Farming equipment and machinery was made an addition to most farms which lead to be a major improvement for farms and farmers.

Explanation:

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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.

really dont know just need some points