In 1915, the United States’ neutral stance was tested when Germany asked Mexico to attack the United States. sank the passenger ship Lusitania. broke a deal to limit submarine warfare. signed the Treaty of Brest-Litovsk with Russia.

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explanation:

it proved indian land claims were unjustified.

monopolies  came to the united states with the colonial administration. the large-scale public works needed to make the new world hospitable to old world immigrants required large companies to carry them out. these companies were granted exclusive contracts for these works by the colonial administrators. even after the american revolution, many of these colonial holdovers still functioned due to the contracts and land

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