The shares of Social Security benefits subject to the individual income tax have grown rapidly since 1984, when benefits first became taxable. Initially, no more than 50 percent of benefits were subject to tax for higher-income taxpayers, and all of those taxes were credited to the Social Security trust funds.
The effect of the attack of Pearl Harbor was that it forced the U.S. into a war with Japan; a war that ended in the unleashing of the worlds first, and hopefully last, use of a nuclear bomb in an attempt to defeat an enemy.
Rather than giving in to the U.S., Japan decided to create a surprise attack on the U.S. in attempt to destroy the U.S. naval power even before an official announcement of war was given. December 7, 1941 This is the day Pearl Harbor was bombed. The Empire of Japan surprised the U.S. naval base with an attack early that morning- ending about 2 hours later. Many destroyers were damaged, over 200 planes were destroyed, and killed around 2400. Causes and Effects of the Bombing of Pearl Harbor. December 8, 1941. The U.S. Congress declared war on Japan the very next day. This was the day the U.S. got involved in World War II. Sunday mornings were a time of leisure for many U.S. military personnel at Pearl Harbor.