By Karen Brettell NEW YORK (Reuters) – The euro slid to a 20-year low and came closer to parity against the dollar on Monday on concerns that an energy crisis will tip the region into a recession, while the U.S. currency was boosted by expectations that the Federal Reserve will hike rates faster and further than peers. The biggest single pipeline carrying Russian gas to Germany, the Nord Stream 1 pipeline, began annual maintenance on Monday, with flows expected to stop for 10 days, but governments, markets and companies are worried the shutdown might be extended because of the war in Ukraine. …