How can low tax rates cause economic expansion when history shows otherwise?

Increasing taxes is basically redistributing wealth. You take more money from an individual who is productive: creates jobs, invests, spends.. To a man who mooches off of welfare checks. You create more tax revenue (this is where the average liberal doesn't understand, I mean I can't blame them b/c they have NO understanding of economics or business whatsoever) by taxing less. It's called the laffer curve, by taxing more you essentially waste that money by going to social programs and other worthless bullshit. By keeping it in the private sector, it gets invested, borrowed, creates jobs.. Over the long run, taxing less will create more tax revenue rather than increasing taxes.

"Tax rates for the wealthy topped out at more than 90 percent from the mid 1940s to the early 1960s.(BIGGEST BOOM TIME IN AMERICAN HISTORY)"

Not even close to being true. The 1920's and the 1870's were the greatest peacetime expansion. The great depression didn't end until 1946 - unless you count making a bunch of crap and blowing it all up as prosperity. The top tax rate was 90% for NOBODY. Not ONE PERSON ever paid a tax rate of 90%.

Bill Clinton also slashed government spending and cut capital gains tax by an effective rate of 44%.

First of all, the US experienced now unfathomable economic growth for the first 400 years of our existence before we ever had a national income tax in 1913.

Since WWII, federal income taxes have been cut 4 times; by Kennedy, Reagan twice, and Bush Jr. All four times tax revenues actually went up due to increased GDP from the economic expansion of more people working and paying taxes. Look it up.

To dispute some of your points:

1. After WWII we did have a top bracket of 90%, but there were very few people earning enough to qualify. The economic expansion post WWII was because America was called upon to rebuild all of Europe. Europe was ravaged by war and did not have the factories or infrastructure at the time to rebuild itself and we profited because of it.

2. Bill Clinton's tax increases are in no way responsible for the economic boom of the 1990's. The invention of the internet and the subsequent proliferation of computers "the dot-com boom" created an entire new industry out of thin air and millions upon millions of new jobs that didn't exist before. He just happened to be president during a time of great innovation.

Wealth is always created from freedom. Government is the direct negation of freedom. Government cannot create any wealth, in fact it destroys wealth. In a free marketplace, if I exchange goods and services with you, we both benefit and become wealthier or we wouldn't do it. You buy a new car because you'd rather have that car than the money you used to pay for it, and the car dealer would rather have your money than the car he sells you. It makes both of your lives better because you both freely consented to it. The only monetary transaction that does not create wealth for both parties is one that is forced. Taxes are forced, so they do not create any wealth for the person paying them. Therefore, the higher the taxes the less wealth is created than otherwise could have been if the people were allowed to spend that money how they wished.

Do you remember the Great Depression of 1920. Probably not because in 1921 taxes were lowered and that resulted in Roaring Twenties. In the early 1980's taxes were lowered and the result was the longest economic expansion in American history

Many motives. Low taxes on the wealthy encourages them to take funds out of agencies and devest because of the fact they comprehend they pays a low tax fee. larger rates encourgages them to boost those agencies because of the fact so whilst they are taxed, they nonetheless make a amazing income.

Tax rates have been going back up and look at how bad the economy is doing now.

shhh..be quiet.. your way above their level the cons are too stupid to be objective