Sorry no one answered sooner, but anyway the answers are A,B,E
I believe the correct answer is 'd', as the allies worked together to defeat Germany before focusing on Japan.
This is correct. That is why Russia's involvement in WW1 ended before the war was over since the Russian Revolution began after which the Tsarist way of ruling was abandoned.
The Indian removal act was signed into law by President Andrew Jackson on May 28, 1830 authorizing the president to grant unsettled lands west of the Mississippi in exchange for Indian lands within existing state borders. A few tribes went peacefully, but many resisted the relocation policy