Question about effect of take-overs on currencies

What would happen, if a non-american conglomerat would want to buy a big US company. Or a a non-japanese one wants to buy a big japanese firm.
Would they have to change their home currency to the one of the take-over?
And would it affect the currency markets?

It happens often enough that large corps buy other international companies. I have a friend whose brother is a financial analyst for a very large bank in Japan. This bank oversees M & As of other larger corps whether they are in Europe, Australia, Japan or whatever. Big money changes hands to be sure, but it's not all cash as you might imagine.

The big banks and investment houses are the ones that make the currency markets move for the most part. If a corp has a lot of cash to convert they do not usually dump it all at once on the market but rather in stages as they need it.

Yes, you're right, not everything is paid in cash.

What else is used when a company is purchased?

Furs, gold coins and salt.

Just kidding. But, even though cash is king in the modern era companies still use the bartering system when they swap stocks and options, etc. Then there is the really complicated part of it which is the accounting (converting assets and liabilities to new ownership, converting fixed assets like real estate, borrowing funds from banks or their own reserve, reducing payroll costs to finance the debt, etc).

As far as trading goes these things don't matter much to us traders.

In Forex, the country on one side of the currency pair is the "company." Study these two "companies" to learn how your favorite pair moves

Yes, but truckloads of them.

When I was trading futures, there was the joke that if you didn't switch to the next contract forward on expiration month, your broker is going to call demanding that you provide/buy a metric ton of hog bellies.

Now that's a margin call!