निम्नलिखित में से कौन सा सबसे मजबूत यांत्रिक ऊतक (mechanical tissue) है जो परिपक्व पौधे के अंगों को संरचनात्मक सहायता प्रदान करता है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?