The ECB said it would give businesses more ultra-cheap loans, raise asset purchases and provide banks with capital relief
The US also expects the second phase of negotiations for a trade deal with China to begin soon
Lagarde has made speaking and listening to a very wide range of voices a key priority for her time in office.
Lagarde takes office at a time when the ECB's governing council is divided as rarely before over its latest round of monetary stimulus.
Lagarde, a former finance minister of France and head of the International Monetary Fund, will replace Mario Draghi at the helm of the ECB on Nov. 1
The IMF needs a managing director of the highest caliber, chosen through an open competition not evidently tainted by national politics
She's run the IMF. She's a lawyer. She's not an economist. Does that matter as she prepares to lead the European Central Bank?
Government borrowing costs across the single-currency bloc tumbled to record lows and euro zone blue-chip stocks hit their highest in more than a year after Lagarde was appointed
In a statement, Lagarde said that she was "honored to have been nominated" and would temporarily relinquish her responsibilities at the IMF while EU lawmakers look to ratify her appointment
Lagarde's name is one of the key pieces in the latest slate of candidates for the EU's top jobs which leaders, lawmakers and parties have been wrangling over since Sunday
Lagarde's comments came as a global market sell-off rolled on following Trump's comments, underscoring rising financial volatility that the IMF will address at its annual meetings this week in Bali
IMF managing director gives warning as US makes new threats
Her sharp remarks come in the backdrop of a nationwide outrage over the rape cases in Jammu and Kashmir's Kathua and Uttar Pradesh's Unnao
She also expressed concern over the high level of discrimination faced by women in rural India and emphasised that there is an urgent need to address this issue
Studies show that Asia's population is ageing faster than anywhere else in the world
Said the world needs to continue to collaborate to address risks and ensure balanced growth
Says, It needs to maintain a sustainable growth path in following years for its bailout programme
Lagarde said she reaffirmed the IMF's readiness to enhance global cooperation
Lagarde singled out some very positive discussions with US Treasury Secretary Steven Mnuchin
The IMF in January raised the US growth estimate a tenth of a point this year to 2.3%