Cardano (ADA) hitting a new monthly high means that the market condition is very bullish for this particular cryptocurrency. It indicates increased investor confidence and sustained buying pressure for ADA. This upward trend indicates higher market demand for Cardano. On the other hand, the performance or standing of Solana (SOL) has not been specified so it’s difficult to make a comparative statement. Please provide more information for a detailed comparison and analysis. However, both are potential competitors in the blockchain space, aiming to facilitate the execution of smart contracts efficiently. Remember, cryptocurrency investments come with a high level of risk due to their volatility. It’s recommended to thoroughly research and consider your financial decisions before investing in these cryptocurrencies.

Creating a new BRICS (Brazil, Russia, India, China, and South Africa) currency could have several potential impacts on the U.S. dollar, among other global currencies. This is largely due to the economic sizes and influence of these five countries: 1. **Possible Weakening of the U.S. Dollar:** If the BRICS countries decide to trade in their own currency, the demand for the U.S. dollar could decrease, possibly weakening its value. Currently, the U.S. dollar plays a significant role in most international transactions, especially for commodities like oil that are typically priced in dollars. This change can also affect the dollar’s standing as the global reserve currency. 2. **Shifting Economic Power:** A BRICS currency might shift economic power and influence away from the U.S. These five countries represent a significant part of the global economy. If they trade in their own currency, they might have more leverage to influence the global economic and financial landscape, lessening U.S. influence in these areas. 3. **Potential Financial Market Instabilities:** The introduction of a new global currency could create instabilities in financial markets, at least in the short term. Investors might view the new currency as a riskier option which could lead to fluctuations in forex markets. This might indirectly affect the U.S. dollar due to market volatility. 4. **Reduced Exposure to U.S. Monetary Policy:** BRICS countries using their own currency would lessen their exposure to U.S. monetary policy. If the Federal Reserve raises interest rates, for example, countries that have a lot of debt in U.S. dollars suffer. Having their own currency would protect BRICS countries from this. However, the idea of a unified BRICS currency faces some significant hurdles. This includes the diverse nature of the BRICS economies, the logistical challenges of managing a unified currency, and potential resistance from other world powers. Additionally, as of 2024, no concrete steps have been taken to create a unified BRICS currency. Its impact on the U.S. dollar remains largely speculative.