Which nation was hit hardest and suffered the loss of over 20 million lives?

Russia

Explanation:

Russia was the most effected nation that saw the devastating deaths of about 20 million people in the world war II both the military and the civilians. The Russians military (Red Army) underwent a disastrous death of men during the first months of the German invasion, with capturing large numbers of Soviet soldiers and civilians as laborers under ruthless circumstances. The fighting damaged farming land, towns, leaving much of the people homeless and without food.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.