. Why did Southerners like Senator Douglas' plan?

Because he served an important role for the southerners and the northerners when it came to dealing with slavery. He hoped that the act would lead to the creation of a transcontinental railroad and settle the differences between the north and south.

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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by 1880, germany had more rail lines than great britain and russia.