Why was the United States entering the war at a critical time? What was the state of Europe at the time of U. S. Entry? What was happening in Russia

Because of the possibility of Germany winning the war.

Explanation:

The United States entered the war in 1917. Germany had a great advantage on the European battlefield, so the United States' entry changed the balance of power. Economic factors are one of the key elements of entering the war. Namely, the United States sold large quantities of weapons to Britain and France. There was a possibility that those countries would lose the war, and in that case, they would not be able to repay the debt.

The situation in Russia was complicated. The country did not have developed industry and was not ready for war. The largest number of victims during the war was among the Russians. The country also faced a revolution, the king was overthrown, and the Bolsheviks took overpower.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

- a.) african slaves and indentured servant’s

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