European stocks opened firmly higher Monday as investors draw optimism from some blockbuster merger deals last week and build gains in regional equities that could take markets back to multi-year highs.

Britain's FTSE 100 benchmark gained at the opening bell, according to financial bookmakers IG, helped by a modestly weaker pound, which slipped to 1.2769 against the U.S. dollar as the U.K. begins Brexit negotiations with the European Union with a weakened government and a slowing economy.

Friday's massive takeover deal between Amazon  (AMZN) and upscale food retailer Whole Foods Market Inc (WFM) , valued at just under $14 billion, had a mixed impact on U.S. markets, but could be a precursor to sector consolidation and further deal-making.

This article was written by a staff member of TheStreet.

More from Video

Inside Carnival's Mind Blowing New Horizon Cruise Ship (Video)

Inside Carnival's Mind Blowing New Horizon Cruise Ship (Video)

Jim Cramer: The 10-Year Yield Could Go to 2.75%

Jim Cramer: The 10-Year Yield Could Go to 2.75%

Elon Musk's Twitter Tirade Is the Dumbest Thing on Wall Street

Elon Musk's Twitter Tirade Is the Dumbest Thing on Wall Street

Replay: Jim Cramer on the Markets, 10-Year Yield, Oil Prices and Foot Locker

Replay: Jim Cramer on the Markets, 10-Year Yield, Oil Prices and Foot Locker

Video: You Could Live in a Ritz-Carlton or St. Regis Home

Video: You Could Live in a Ritz-Carlton or St. Regis Home