At what block number did the Constantinople and Petersburg upgrades activate on Ethereum mainnet?
At what block number did Ethereum mainnet's Merge to proof of stake take effect, i.e. the first proof-of-stake block?
How many years is one regular term of Germany's Bundestag?
How many years is one term of the President of Mexico?
In what year was Brazil's current constitution promulgated?
In what year did Russia annex Crimea?
In what year did South Sudan become independent?
In what year did Kosovo declare independence from Serbia?
In what year was the Iran nuclear deal, the JCPOA, agreed?
In what year was the Cuban Missile Crisis?
In what year did US President Richard Nixon visit China?
How many seats does India's Lok Sabha have?
In what year did Japan's current constitution come into effect?
In what year was Macau handed over from Portugal to China?
In what year was the first Oslo Accord signed?
In what year were the Camp David Accords signed?
How many seats does Israel's Knesset have?
How many seats does Japan's House of Representatives have?
In what year did New Zealand become the first self-governing country to give women the vote?
In what year did the United States enter World War I?
In what year was the 23rd Amendment, giving Washington, D.C. electoral votes, ratified?
